Year Month SOI Phase 1876 1 10.8 2 1876 2 10.6 2 1876 3 -0.7 3 1876 4 7.9 4 1876 5 6.9 2 1876 6 14.2 2 1876 7 -5.2 3 1876 8 11.8 4 1876 9 10.5 2 1876 10 -7.9 3 1876 11 -2.8 5 1876 12 -4.3 5 1877 1 -7.0 0 1877 2 -7.0 0 1877 3 -7.0 0 1877 4 -7.0 0 1877 5 -7.0 0 1877 6 -7.0 0 1877 7 -9.5 1 1877 8 -7.6 1 1877 9 -16.5 1 1877 10 -16.0 1 1877 11 -12.3 1 1877 12 -13.9 1 1878 1 -9.4 1 1878 2 -22.9 1 1878 3 -14.7 1 1878 4 -8.2 1 1878 5 2.5 4 1878 6 -3.2 5 1878 7 14.8 4 1878 8 12.4 2 1878 9 17.5 2 1878 10 11.7 2 1878 11 14.4 2 1878 12 16.6 2 1879 1 12.1 2 1879 2 14.1 2 1879 3 10.8 2 1879 4 10.9 2 1879 5 2.5 2 1879 6 13.5 4 1879 7 20.2 2 1879 8 21.5 2 1879 9 18.7 2 1879 10 16.1 2 1879 11 9.3 2 1879 12 -6.8 3 1880 1 10.3 4 1880 2 7.2 2 1880 3 11.8 2 1880 4 4.3 2 1880 5 12.1 2 1880 6 7.2 2 1880 7 1.4 2 1880 8 13.6 2 1880 9 8.1 2 1880 10 5.4 2 1880 11 6.8 2 1880 12 -3.2 3 1881 1 -7.9 1 1881 2 -6.6 1 1881 3 0.7 4 1881 4 -0.1 5 1881 5 -3.4 5 1881 6 -4.6 5 1881 7 -5.2 5 1881 8 -10.6 5 1881 9 -12.9 1 1881 10 -24.4 1 1881 11 6.8 4 1881 12 3.5 5 1882 1 -7.5 3 1882 2 -2.2 5 1882 3 3.6 4 1882 4 0.6 5 1882 5 6.9 4 1882 6 -10.9 3 1882 7 -19.8 3 1882 8 -24.0 1 1882 9 -14.1 1 1882 10 -2.1 4 1882 11 2.3 5 1882 12 9.0 4 1883 1 5.5 2 1883 2 8.6 2 1883 3 -23.3 3 1883 4 12.3 4 1883 5 13.6 2 1883 6 2.4 2 1883 7 -9.5 3 1883 8 1.5 4 1883 9 -7.7 3 1883 10 5.4 4 1883 11 4.9 2 1883 12 -16.5 3 1884 1 -13.2 1 1884 2 -6.2 1 1884 3 7.4 4 1884 4 -14.0 3 1884 5 1.8 4 1884 6 7.2 4 1884 7 -2.8 3 1884 8 -4.6 5 1884 9 -6.5 5 1884 10 4.7 4 1884 11 -1.5 5 1884 12 -13.9 3 1885 1 -17.1 1 1885 2 0.7 4 1885 3 3.6 5 1885 4 -0.8 5 1885 5 -3.4 5 1885 6 -13.0 3 1885 7 -4.6 1 1885 8 -8.9 5 1885 9 -3.6 1 1885 10 -17.9 3 1885 11 -15.4 1 1885 12 3.9 4 1886 1 -1.2 5 1886 2 0.7 5 1886 3 1.7 5 1886 4 8.5 4 1886 5 6.2 2 1886 6 3.8 2 1886 7 6.9 2 1886 8 13.0 2 1886 9 13.4 2 1886 10 14.2 2 1886 11 9.9 2 1886 12 13.0 2 1887 1 11.7 2 1887 2 10.6 2 1887 3 7.9 2 1887 4 7.9 2 1887 5 -3.4 3 1887 6 3.8 4 1887 7 4.5 5 1887 8 4.5 5 1887 9 5.2 2 1887 10 5.4 2 1887 11 -5.3 3 1887 12 3.9 4 1888 1 -3.6 5 1888 2 -3.2 5 1888 3 -11.3 3 1888 4 -21.3 3 1888 5 -8.5 1 1888 6 -14.4 1 1888 7 -15.5 1 1888 8 -8.2 1 1888 9 -8.8 1 1888 10 -14.8 1 1888 11 -12.3 1 1888 12 -3.8 1 1889 1 -26.6 3 1889 2 -2.7 4 1889 3 -25.3 3 1889 4 -0.8 4 1889 5 -1.2 5 1889 6 18.4 4 1889 7 1.4 3 1889 8 2.1 5 1889 9 11.1 4 1889 10 4.7 2 1889 11 22.0 4 1889 12 20.7 2 1890 1 20.3 2 1890 2 10.6 2 1890 3 11.8 2 1890 4 5.7 2 1890 5 4.0 2 1890 6 4.5 5 1890 7 -2.2 5 1890 8 -2.8 5 1890 9 9.3 4 1890 10 4.1 2 1890 11 2.3 5 1890 12 -0.7 5 1891 1 15.1 4 1891 2 -4.7 3 1891 3 -9.4 5 1891 4 3.5 4 1891 5 0.3 5 1891 6 -1.8 5 1891 7 -5.8 5 1891 8 -8.2 5 1891 9 -10.0 1 1891 10 1.0 4 1891 11 -4.6 5 1891 12 -5.8 5 1892 1 2.1 4 1892 2 -11.6 3 1892 3 8.9 4 1892 4 5.7 2 1892 5 9.9 2 1892 6 16.3 2 1892 7 6.9 2 1892 8 5.7 2 1892 9 11.3 2 1892 10 10.0 2 1892 11 7.0 2 1892 12 6.8 2 1893 1 6.5 2 1893 2 4.6 2 1893 3 3.7 5 1893 4 3.5 5 1893 5 8.8 4 1893 6 12.2 2 1893 7 13.4 2 1893 8 10.6 2 1893 9 9.2 2 1893 10 6.8 2 1893 11 6.4 2 1893 12 5.8 2 1894 1 4.6 2 1894 2 4.0 5 1894 3 3.5 5 1894 4 3.3 5 1894 5 3.3 5 1894 6 3.2 5 1894 7 3.0 5 1894 8 5.5 5 1894 9 7.2 2 1894 10 8.0 2 1894 11 3.3 2 1894 12 -0.4 5 1895 1 -0.9 5 1895 2 2.0 5 1895 3 3.8 5 1895 4 1.1 5 1895 5 0.1 5 1895 6 -1.4 5 1895 7 -1.3 5 1895 8 -0.9 5 1895 9 -0.8 5 1895 10 -0.6 5 1895 11 -0.7 5 1895 12 -1.4 5 1896 1 0.7 5 1896 2 4.2 5 1896 3 -6.5 3 1896 4 -8.2 5 1896 5 -38.8 3 1896 6 -27.0 1 1896 7 -19.1 1 1896 8 -21.0 1 1896 9 -18.2 1 1896 10 -19.2 1 1896 11 -11.6 1 1896 12 -15.5 1 1897 1 -13.2 1 1897 2 -8.6 1 1897 3 -15.6 1 1897 4 -16.2 1 1897 5 -15.2 1 1897 6 -0.4 4 1897 7 -2.2 5 1897 8 0.9 5 1897 9 0.5 5 1897 10 2.2 5 1897 11 -7.8 3 1897 12 9.0 4 1898 1 6.4 2 1898 2 5.7 2 1898 3 15.1 4 1898 4 9.4 2 1898 5 -1.2 3 1898 6 -2.5 5 1898 7 5.7 4 1898 8 2.1 5 1898 9 3.5 5 1898 10 -0.3 5 1898 11 -2.7 5 1898 12 -1.7 5 1899 1 12.7 4 1899 2 8.6 2 1899 3 11.3 2 1899 4 3.5 2 1899 5 -6.3 3 1899 6 -9.5 5 1899 7 -5.2 1 1899 8 -9.5 5 1899 9 -1.2 4 1899 10 6.6 4 1899 11 15.0 4 1899 12 -4.3 3 1900 1 -7.9 5 1900 2 -7.6 1 1900 3 -23.3 3 1900 4 -16.9 1 1900 5 -6.3 1 1900 6 21.9 4 1900 7 9.3 2 1900 8 7.5 2 1900 9 -15.9 3 1900 10 -17.3 1 1900 11 -5.9 1 1900 12 -6.8 5 1901 1 -0.8 4 1901 2 2.2 5 1901 3 7.4 4 1901 4 3.5 2 1901 5 0.3 5 1901 6 16.3 4 1901 7 3.6 2 1901 8 9.4 4 1901 9 -15.3 3 1901 10 -22.3 1 1901 11 -8.5 1 1901 12 -3.2 1 1902 1 16.5 4 1902 2 -3.2 3 1902 3 9.4 4 1902 4 6.5 2 1902 5 7.7 2 1902 6 1.7 2 1902 7 1.4 5 1902 8 -8.2 3 1902 9 -17.1 3 1902 10 -7.2 1 1902 11 -3.4 5 1902 12 -4.3 5 1903 1 -9.9 5 1903 2 -11.6 1 1903 3 14.6 4 1903 4 15.2 2 1903 5 7.7 2 1903 6 -1.1 3 1903 7 5.7 4 1903 8 0.3 5 1903 9 8.7 4 1903 10 4.7 2 1903 11 1.1 5 1903 12 14.6 4 1904 1 13.6 2 1904 2 16.0 2 1904 3 7.4 2 1904 4 27.7 4 1904 5 9.2 2 1904 6 -6.7 3 1904 7 -8.2 5 1904 8 0.9 4 1904 9 0.5 5 1904 10 1.6 5 1904 11 -16.7 3 1904 12 1.3 4 1905 1 -9.9 3 1905 2 -18.5 3 1905 3 -27.7 1 1905 4 -38.2 1 1905 5 -34.3 1 1905 6 -27.7 1 1905 7 -19.8 1 1905 8 -7.0 1 1905 9 -6.5 5 1905 10 -5.3 5 1905 11 -17.3 3 1905 12 -14.4 1 1906 1 -4.1 1 1906 2 -8.6 5 1906 3 -4.3 1 1906 4 -6.2 5 1906 5 4.3 4 1906 6 -3.9 3 1906 7 6.3 4 1906 8 14.8 4 1906 9 18.1 2 1906 10 9.8 2 1906 11 20.7 4 1906 12 5.5 2 1907 1 2.6 5 1907 2 -2.8 5 1907 3 2.3 4 1907 4 -3.3 5 1907 5 -5.0 5 1907 6 -2.9 5 1907 7 -5.1 5 1907 8 -4.2 5 1907 9 -3.4 5 1907 10 -1.1 5 1907 11 2.2 5 1907 12 -2.4 5 1908 1 -4.4 5 1908 2 -1.0 5 1908 3 4.4 4 1908 4 2.3 5 1908 5 1.1 5 1908 6 -1.1 5 1908 7 -3.2 5 1908 8 2.2 4 1908 9 17.5 4 1908 10 8.5 2 1908 11 2.3 2 1908 12 -6.8 3 1909 1 -3.1 5 1909 2 -4.2 5 1909 3 -1.2 5 1909 4 -13.3 3 1909 5 2.5 4 1909 6 19.1 4 1909 7 9.9 2 1909 8 9.4 2 1909 9 1.1 2 1909 10 4.7 5 1909 11 8.7 2 1909 12 3.4 2 1910 1 5.0 5 1910 2 15.0 4 1910 3 10.3 2 1910 4 4.3 2 1910 5 1.1 5 1910 6 18.4 4 1910 7 19.0 2 1910 8 9.4 2 1910 9 15.2 2 1910 10 11.0 2 1910 11 18.8 2 1910 12 14.6 2 1911 1 2.6 2 1911 2 0.7 5 1911 3 2.1 5 1911 4 1.3 5 1911 5 -7.1 3 1911 6 -10.9 1 1911 7 -11.9 1 1911 8 -11.3 1 1911 9 -8.3 1 1911 10 -11.6 1 1911 11 -7.2 1 1911 12 -2.7 5 1912 1 -10.3 3 1912 2 -19.0 3 1912 3 -8.9 1 1912 4 -19.1 3 1912 5 -11.5 1 1912 6 -6.0 1 1912 7 -0.4 4 1912 8 -7.0 5 1912 9 -3.6 5 1912 10 -7.9 5 1912 11 2.3 4 1912 12 -9.4 3 1913 1 -4.1 1 1913 2 -6.2 5 1913 3 0.2 4 1913 4 -6.0 5 1913 5 -7.1 5 1913 6 -3.9 5 1913 7 -1.6 5 1913 8 -7.0 5 1913 9 -8.8 5 1913 10 -9.1 1 1913 11 -11.6 1 1913 12 -8.3 1 1914 1 -6.0 1 1914 2 1.2 4 1914 3 7.4 4 1914 4 -9.7 3 1914 5 -9.7 1 1914 6 -9.7 1 1914 7 -9.7 1 1914 8 -16.1 1 1914 9 -16.1 1 1914 10 -14.2 1 1914 11 -6.9 1 1914 12 -6.9 1 1915 1 -6.9 1 1915 2 -10.5 1 1915 3 -10.5 1 1915 4 -10.5 1 1915 5 5.4 4 1915 6 5.4 5 1915 7 5.4 5 1915 8 7.4 2 1915 9 -0.2 5 1915 10 -7.0 3 1915 11 -14.2 3 1915 12 8.5 4 1916 1 5.0 2 1916 2 -4.7 3 1916 3 -6.5 5 1916 4 -0.8 4 1916 5 6.9 4 1916 6 7.2 2 1916 7 23.8 4 1916 8 15.4 2 1916 9 4.6 2 1916 10 6.6 2 1916 11 9.3 2 1916 12 14.1 2 1917 1 4.5 2 1917 2 9.6 2 1917 3 15.1 2 1917 4 18.9 2 1917 5 21.0 2 1917 6 17.7 2 1917 7 26.3 2 1917 8 33.1 2 1917 9 29.2 2 1917 10 16.1 2 1917 11 20.1 2 1917 12 21.2 2 1918 1 14.1 2 1918 2 16.5 2 1918 3 -2.7 3 1918 4 14.5 4 1918 5 9.9 2 1918 6 -4.6 3 1918 7 -13.1 3 1918 8 -4.0 1 1918 9 -7.7 5 1918 10 -4.7 5 1918 11 1.1 4 1918 12 -9.4 3 1919 1 -15.6 1 1919 2 -12.6 1 1919 3 -12.3 1 1919 4 -3.0 4 1919 5 -6.3 5 1919 6 -9.5 5 1919 7 -8.2 1 1919 8 -6.4 1 1919 9 -5.3 5 1919 10 -10.4 5 1919 11 -11.0 1 1919 12 -10.4 1 1920 1 1.2 4 1920 2 -2.7 5 1920 3 -4.6 5 1920 4 -0.1 5 1920 5 -1.9 5 1920 6 5.1 4 1920 7 8.7 2 1920 8 5.1 2 1920 9 5.2 2 1920 10 -4.1 3 1920 11 -0.2 5 1920 12 8.5 4 1921 1 10.3 2 1921 2 6.2 2 1921 3 6.8 2 1921 4 6.8 2 1921 5 8.6 2 1921 6 8.6 2 1921 7 2.7 2 1921 8 -6.4 3 1921 9 5.2 4 1921 10 10.4 2 1921 11 8.0 2 1921 12 6.9 2 1922 1 7.4 2 1922 2 8.6 2 1922 3 4.1 2 1922 4 -5.2 3 1922 5 -4.1 5 1922 6 4.5 4 1922 7 2.0 5 1922 8 -1.0 5 1922 9 5.2 4 1922 10 6.6 2 1922 11 8.0 2 1922 12 10.5 2 1923 1 5.0 2 1923 2 3.7 5 1923 3 7.0 2 1923 4 7.2 2 1923 5 2.5 2 1923 6 0.3 5 1923 7 -10.7 3 1923 8 -17.4 1 1923 9 -14.1 1 1923 10 -6.0 1 1923 11 -12.3 3 1923 12 0.8 4 1924 1 -6.0 5 1924 2 0.3 4 1924 3 1.2 5 1924 4 -14.0 3 1924 5 11.4 4 1924 6 6.5 2 1924 7 6.9 2 1924 8 10.0 2 1924 9 8.1 2 1924 10 8.5 2 1924 11 11.2 2 1924 12 3.9 2 1925 1 5.0 5 1925 2 13.6 4 1925 3 12.2 2 1925 4 12.3 2 1925 5 -0.4 3 1925 6 -4.6 5 1925 7 -12.5 3 1925 8 -10.1 1 1925 9 -5.9 1 1925 10 -12.9 3 1925 11 -9.1 1 1925 12 -8.3 1 1926 1 -6.0 1 1926 2 -16.0 3 1926 3 -12.8 1 1926 4 -6.7 1 1926 5 -1.9 5 1926 6 -6.7 5 1926 7 -1.0 4 1926 8 -7.0 5 1926 9 1.7 4 1926 10 4.7 5 1926 11 1.3 5 1926 12 4.9 5 1927 1 4.5 5 1927 2 0.3 5 1927 3 15.1 4 1927 4 5.7 2 1927 5 6.2 2 1927 6 0.6 5 1927 7 0.6 5 1927 8 -1.6 5 1927 9 -0.1 5 1927 10 -4.1 5 1927 11 -7.8 5 1927 12 6.4 4 1928 1 -10.8 3 1928 2 10.1 4 1928 3 11.3 2 1928 4 10.1 2 1928 5 -1.9 3 1928 6 -7.4 5 1928 7 -0.4 4 1928 8 9.4 4 1928 9 8.1 2 1928 10 9.8 2 1928 11 2.3 2 1928 12 10.5 4 1929 1 15.6 2 1929 2 18.0 2 1929 3 3.6 2 1929 4 3.5 5 1929 5 -10.7 3 1929 6 0.3 4 1929 7 1.4 5 1929 8 0.3 5 1929 9 -0.1 5 1929 10 8.5 4 1929 11 10.6 2 1929 12 4.4 2 1930 1 12.2 4 1930 2 7.2 2 1930 3 0.7 5 1930 4 -3.8 5 1930 5 2.5 4 1930 6 -5.3 3 1930 7 -4.0 5 1930 8 -1.6 5 1930 9 -6.5 5 1930 10 4.1 4 1930 11 1.7 5 1930 12 -2.7 5 1931 1 6.4 4 1931 2 -16.5 3 1931 3 4.1 4 1931 4 7.2 2 1931 5 12.8 2 1931 6 15.6 2 1931 7 8.7 2 1931 8 4.3 5 1931 9 4.3 5 1931 10 4.3 5 1931 11 -1.1 5 1931 12 -1.1 5 1932 1 -3.2 5 1932 2 -3.2 5 1932 3 -3.2 5 1932 4 -3.2 5 1932 5 1.1 5 1932 6 1.1 5 1932 7 1.1 5 1932 8 4.9 5 1932 9 -8.3 3 1932 10 -4.1 1 1932 11 -4.6 5 1932 12 1.8 4 1933 1 -11.8 3 1933 2 4.2 4 1933 3 -2.7 5 1933 4 2.8 4 1933 5 6.2 5 1933 6 -3.9 3 1933 7 3.3 4 1933 8 -0.3 5 1933 9 2.3 5 1933 10 4.1 5 1933 11 6.8 2 1933 12 6.9 2 1934 1 6.0 2 1934 2 -0.7 5 1934 3 -0.7 5 1934 4 5.0 4 1934 5 -6.3 3 1934 6 8.6 4 1934 7 2.7 2 1934 8 -21.0 3 1934 9 -5.9 1 1934 10 4.7 4 1934 11 12.5 4 1934 12 -3.8 3 1935 1 6.0 4 1935 2 -5.7 3 1935 3 9.8 4 1935 4 2.1 2 1935 5 -5.6 3 1935 6 -2.5 5 1935 7 -0.4 5 1935 8 2.1 5 1935 9 6.4 4 1935 10 7.9 2 1935 11 3.6 2 1935 12 -5.3 3 1936 1 -2.7 5 1936 2 -0.2 5 1936 3 0.7 5 1936 4 19.6 4 1936 5 4.7 2 1936 6 -1.8 5 1936 7 3.9 4 1936 8 -8.2 3 1936 9 2.9 4 1936 10 0.3 5 1936 11 -13.8 3 1936 12 -0.7 4 1937 1 8.8 4 1937 2 -6.2 3 1937 3 4.5 4 1937 4 1.3 5 1937 5 0.3 5 1937 6 2.4 5 1937 7 -5.2 3 1937 8 3.3 4 1937 9 1.1 5 1937 10 -2.2 5 1937 11 -2.1 5 1937 12 5.4 4 1938 1 6.9 2 1938 2 2.7 2 1938 3 -4.1 5 1938 4 2.8 4 1938 5 12.8 4 1938 6 14.9 2 1938 7 17.2 2 1938 8 12.4 2 1938 9 7.6 2 1938 10 13.6 2 1938 11 1.7 2 1938 12 12.5 4 1939 1 16.5 2 1939 2 7.2 2 1939 3 9.4 2 1939 4 7.9 2 1939 5 -0.4 5 1939 6 -1.8 5 1939 7 7.5 4 1939 8 -0.3 5 1939 9 -8.8 3 1939 10 -14.8 1 1939 11 -7.8 1 1939 12 -9.9 1 1940 1 -0.8 4 1940 2 -5.2 5 1940 3 -10.4 5 1940 4 -8.9 1 1940 5 -13.0 1 1940 6 -17.2 1 1940 7 -14.3 1 1940 8 -17.4 1 1940 9 -18.8 1 1940 10 -18.6 1 1940 11 -6.5 1 1940 12 -30.7 3 1941 1 -10.3 1 1941 2 -17.0 1 1941 3 -10.4 1 1941 4 -10.4 1 1941 5 -5.6 1 1941 6 -13.0 3 1941 7 -19.1 1 1941 8 -18.0 1 1941 9 -7.7 1 1941 10 -20.5 3 1941 11 -9.1 1 1941 12 -9.9 1 1942 1 -13.7 1 1942 2 -4.7 1 1942 3 -6.0 5 1942 4 -5.2 5 1942 5 5.5 4 1942 6 6.5 2 1942 7 -1.0 5 1942 8 3.9 4 1942 9 8.7 2 1942 10 9.2 2 1942 11 -4.0 3 1942 12 12.5 4 1943 1 8.8 2 1943 2 10.1 2 1943 3 2.6 2 1943 4 11.6 4 1943 5 3.3 2 1943 6 -7.4 3 1943 7 2.7 4 1943 8 7.5 4 1943 9 5.8 2 1943 10 9.8 2 1943 11 3.6 2 1943 12 -9.9 3 1944 1 -8.9 1 1944 2 3.2 4 1944 3 4.1 5 1944 4 -5.2 3 1944 5 -0.4 5 1944 6 -3.9 5 1944 7 -8.2 5 1944 8 3.3 4 1944 9 2.9 5 1944 10 -8.5 3 1944 11 -6.5 1 1944 12 2.9 4 1945 1 4.5 5 1945 2 5.7 2 1945 3 10.8 2 1945 4 -6.7 3 1945 5 0.3 4 1945 6 6.5 4 1945 7 3.3 2 1945 8 11.2 4 1945 9 8.7 2 1945 10 2.9 2 1945 11 -3.4 5 1945 12 5.4 4 1946 1 -3.1 3 1946 2 3.7 4 1946 3 -2.7 5 1946 4 -8.9 5 1946 5 -10.0 1 1946 6 -8.8 1 1946 7 -9.5 1 1946 8 -4.0 1 1946 9 -13.3 3 1946 10 -12.3 1 1946 11 -1.5 4 1946 12 -6.8 5 1947 1 -5.5 5 1947 2 -5.2 5 1947 3 9.4 4 1947 4 -4.5 3 1947 5 -12.2 3 1947 6 1.7 4 1947 7 8.7 4 1947 8 6.9 2 1947 9 11.7 2 1947 10 -1.6 3 1947 11 8.7 4 1947 12 3.9 2 1948 1 -3.6 5 1948 2 -3.7 5 1948 3 -4.6 5 1948 4 2.1 4 1948 5 4.0 5 1948 6 -4.6 3 1948 7 0.8 4 1948 8 -4.0 5 1948 9 -7.1 5 1948 10 6.6 4 1948 11 4.2 2 1948 12 -6.8 3 1949 1 -7.9 5 1949 2 1.2 4 1949 3 4.1 5 1949 4 0.6 5 1949 5 -4.8 5 1949 6 -10.9 3 1949 7 -1.6 4 1949 8 -4.0 5 1949 9 2.3 4 1949 10 6.0 5 1949 11 -5.9 3 1949 12 6.4 4 1950 1 4.5 2 1950 2 17.0 4 1950 3 14.6 2 1950 4 13.8 2 1950 5 7.7 2 1950 6 22.6 4 1950 7 19.6 2 1950 8 11.8 2 1950 9 7.0 2 1950 10 18.0 4 1950 11 11.8 2 1950 12 21.7 2 1951 1 12.7 2 1951 2 5.7 2 1951 3 -5.5 3 1951 4 -7.4 5 1951 5 -11.5 1 1951 6 -1.8 4 1951 7 -12.5 3 1951 8 -5.2 1 1951 9 -11.2 3 1951 10 -12.3 1 1951 11 -8.5 1 1951 12 -8.3 1 1952 1 -8.9 1 1952 2 -8.1 1 1952 3 0.2 4 1952 4 -6.7 3 1952 5 7.7 4 1952 6 5.8 2 1952 7 4.5 2 1952 8 -2.2 5 1952 9 -1.8 5 1952 10 3.5 4 1952 11 0.4 5 1952 12 -12.8 3 1953 1 1.6 4 1953 2 -7.1 3 1953 3 -6.0 5 1953 4 -0.8 5 1953 5 -25.5 3 1953 6 -2.5 4 1953 7 -1.0 5 1953 8 -16.1 3 1953 9 -13.0 1 1953 10 -0.3 4 1953 11 -2.7 5 1953 12 -5.8 5 1954 1 5.0 4 1954 2 -5.2 3 1954 3 -2.2 5 1954 4 5.0 4 1954 5 4.0 5 1954 6 -2.5 5 1954 7 3.3 4 1954 8 9.4 4 1954 9 2.3 2 1954 10 2.2 5 1954 11 2.3 5 1954 12 11.5 4 1955 1 -5.5 3 1955 2 14.6 4 1955 3 1.2 3 1955 4 -5.2 5 1955 5 11.4 4 1955 6 12.8 2 1955 7 16.6 2 1955 8 13.6 2 1955 9 14.6 2 1955 10 16.7 2 1955 11 15.0 2 1955 12 7.9 2 1956 1 10.8 2 1956 2 12.1 2 1956 3 7.4 2 1956 4 8.7 2 1956 5 16.5 2 1956 6 10.0 2 1956 7 11.1 2 1956 8 10.6 2 1956 9 1.1 2 1956 10 19.9 4 1956 11 2.3 3 1956 12 8.5 4 1957 1 4.5 2 1957 2 -3.2 3 1957 3 -2.7 5 1957 4 -0.1 5 1957 5 -11.5 3 1957 6 -1.8 4 1957 7 1.4 5 1957 8 -8.2 3 1957 9 -9.4 1 1957 10 -0.3 4 1957 11 -11.0 3 1957 12 -4.3 1 1958 1 -17.5 3 1958 2 -7.1 1 1958 3 -2.2 5 1958 4 1.3 5 1958 5 -9.3 3 1958 6 -0.4 4 1958 7 3.3 5 1958 8 7.5 2 1958 9 -3.0 3 1958 10 -0.3 5 1958 11 -4.6 5 1958 12 -7.3 5 1959 1 -8.9 1 1959 2 -15.0 1 1959 3 7.0 4 1959 4 4.3 2 1959 5 4.0 5 1959 6 -5.3 3 1959 7 -4.0 5 1959 8 -4.0 5 1959 9 0.5 5 1959 10 4.7 5 1959 11 11.2 4 1959 12 6.9 2 1960 1 0.2 5 1960 2 -1.7 5 1960 3 4.5 4 1960 4 7.2 2 1960 5 4.7 2 1960 6 -2.5 5 1960 7 4.5 4 1960 8 6.3 2 1960 9 7.6 2 1960 10 0.3 5 1960 11 6.8 4 1960 12 5.9 2 1961 1 -3.1 3 1961 2 5.7 4 1961 3 -20.5 3 1961 4 7.9 4 1961 5 1.8 2 1961 6 -2.5 5 1961 7 -0.4 5 1961 8 -0.3 5 1961 9 1.1 5 1961 10 4.7 5 1961 11 6.8 2 1961 12 12.5 2 1962 1 16.5 2 1962 2 -5.2 3 1962 3 -3.1 5 1962 4 -0.8 5 1962 5 12.1 4 1962 6 5.1 2 1962 7 -0.4 5 1962 8 4.5 4 1962 9 5.2 2 1962 10 10.4 2 1962 11 4.2 2 1962 12 0.3 5 1963 1 8.4 4 1963 2 2.7 2 1963 3 5.5 5 1963 4 7.2 2 1963 5 2.5 2 1963 6 -10.2 3 1963 7 -2.2 4 1963 8 -2.8 5 1963 9 -5.9 5 1963 10 -14.8 3 1963 11 -9.1 1 1963 12 -12.9 1 1964 1 -4.1 1 1964 2 -2.2 5 1964 3 5.5 4 1964 4 1.3 5 1964 5 6.9 4 1964 6 5.8 2 1964 7 5.1 2 1964 8 14.2 4 1964 9 14.0 2 1964 10 14.2 2 1964 11 2.3 2 1964 12 -4.3 5 1965 1 -4.6 5 1965 2 1.2 4 1965 3 2.1 5 1965 4 -10.4 3 1965 5 -0.4 4 1965 6 -10.9 3 1965 7 -21.0 3 1965 8 -10.1 1 1965 9 -13.5 1 1965 10 -11.0 1 1965 11 -16.7 1 1965 12 0.3 4 1966 1 -4.6 5 1966 2 -4.7 5 1966 3 -12.8 3 1966 4 -6.0 1 1966 5 -7.8 5 1966 6 0.3 4 1966 7 -0.4 5 1966 8 4.5 4 1966 9 -1.8 5 1966 10 -2.2 5 1966 11 0.4 5 1966 12 -4.8 5 1967 1 14.1 4 1967 2 12.6 2 1967 3 6.5 2 1967 4 -3.8 3 1967 5 -2.6 5 1967 6 4.5 4 1967 7 0.8 5 1967 8 5.7 4 1967 9 5.8 2 1967 10 -0.3 5 1967 11 -4.6 5 1967 12 -6.8 5 1968 1 3.6 4 1968 2 9.1 4 1968 3 -3.6 3 1968 4 -3.0 5 1968 5 14.3 4 1968 6 10.0 2 1968 7 6.3 2 1968 8 0.3 5 1968 9 -2.4 5 1968 10 -1.6 5 1968 11 -3.4 5 1968 12 0.3 5 1969 1 -14.2 3 1969 2 -7.6 1 1969 3 -0.7 4 1969 4 -8.2 3 1969 5 -5.6 1 1969 6 -1.1 5 1969 7 -6.4 5 1969 8 -4.0 5 1969 9 -10.0 3 1969 10 -11.6 1 1969 11 -0.2 4 1969 12 2.3 5 1970 1 -10.8 3 1970 2 -12.1 1 1970 3 0.7 4 1970 4 -4.5 5 1970 5 2.5 4 1970 6 8.6 4 1970 7 -5.2 3 1970 8 3.9 4 1970 9 12.8 4 1970 10 11.0 2 1970 11 18.8 2 1970 12 16.1 2 1971 1 2.1 3 1971 2 15.5 4 1971 3 16.1 2 1971 4 19.6 2 1971 5 9.2 2 1971 6 1.7 2 1971 7 1.4 5 1971 8 14.2 4 1971 9 15.8 2 1971 10 18.6 2 1971 11 6.8 2 1971 12 0.8 5 1972 1 3.1 5 1972 2 7.2 2 1972 3 1.2 5 1972 4 -5.2 5 1972 5 -24.0 3 1972 6 -10.9 1 1972 7 -17.3 1 1972 8 -8.2 1 1972 9 -14.1 1 1972 10 -11.0 1 1972 11 -3.4 1 1972 12 -13.4 3 1973 1 -3.6 1 1973 2 -15.0 3 1973 3 -0.3 4 1973 4 -2.3 5 1973 5 3.3 4 1973 6 10.0 4 1973 7 5.7 2 1973 8 11.8 2 1973 9 13.4 2 1973 10 10.4 2 1973 11 31.5 4 1973 12 15.6 2 1974 1 20.3 2 1974 2 16.0 2 1974 3 17.0 2 1974 4 9.4 2 1974 5 10.6 2 1974 6 1.7 2 1974 7 11.1 4 1974 8 6.3 2 1974 9 12.2 2 1974 10 9.2 2 1974 11 -1.5 3 1974 12 0.3 5 1975 1 -6.0 5 1975 2 4.7 4 1975 3 9.4 2 1975 4 12.3 2 1975 5 6.2 2 1975 6 12.8 2 1975 7 19.6 2 1975 8 19.7 2 1975 9 22.2 2 1975 10 18.6 2 1975 11 13.1 2 1975 12 17.6 2 1976 1 11.2 2 1976 2 12.6 2 1976 3 10.8 2 1976 4 0.6 3 1976 5 2.5 5 1976 6 0.3 5 1976 7 -11.9 3 1976 8 -11.3 1 1976 9 -12.4 1 1976 10 3.5 4 1976 11 9.3 4 1976 12 -20.0 3 1977 1 -4.1 4 1977 2 8.6 4 1977 3 -9.4 3 1977 4 -8.2 1 1977 5 -9.3 1 1977 6 -15.8 1 1977 7 -13.7 1 1977 8 -11.3 1 1977 9 -8.8 1 1977 10 -12.9 1 1977 11 -14.2 1 1977 12 -11.4 1 1978 1 -3.6 1 1978 2 -26.9 3 1978 3 -6.0 1 1978 4 -7.4 5 1978 5 15.8 4 1978 6 4.5 2 1978 7 5.1 5 1978 8 2.1 5 1978 9 1.1 5 1978 10 -5.3 5 1978 11 -2.1 5 1978 12 -2.2 5 1979 1 -4.6 5 1979 2 6.2 4 1979 3 -3.6 3 1979 4 -5.2 5 1979 5 4.0 4 1979 6 4.5 5 1979 7 13.6 4 1979 8 -4.6 3 1979 9 1.7 4 1979 10 -2.2 5 1979 11 -4.6 5 1979 12 -8.3 5 1980 1 2.6 4 1980 2 0.3 5 1980 3 -8.4 3 1980 4 -11.8 1 1980 5 -2.6 4 1980 6 -3.9 5 1980 7 -1.6 5 1980 8 1.5 5 1980 9 -4.7 5 1980 10 -0.9 5 1980 11 -3.4 5 1980 12 -2.2 5 1981 1 2.1 5 1981 2 -4.2 5 1981 3 -15.6 3 1981 4 -5.2 1 1981 5 8.4 4 1981 6 12.1 2 1981 7 8.1 2 1981 8 5.1 2 1981 9 6.4 2 1981 10 -5.3 3 1981 11 2.3 4 1981 12 3.4 5 1982 1 8.8 4 1982 2 -0.2 3 1982 3 0.7 5 1982 4 -2.3 5 1982 5 -7.1 5 1982 6 -17.2 3 1982 7 -17.9 1 1982 8 -22.2 1 1982 9 -20.0 1 1982 10 -20.5 1 1982 11 -30.0 1 1982 12 -22.6 1 1983 1 -31.4 1 1983 2 -35.7 1 1983 3 -25.7 1 1983 4 -15.5 1 1983 5 5.5 4 1983 6 -3.2 3 1983 7 -7.0 5 1983 8 0.9 4 1983 9 9.9 4 1983 10 4.7 2 1983 11 -0.8 5 1983 12 -1.2 5 1984 1 0.7 5 1984 2 5.2 4 1984 3 -6.5 3 1984 4 1.3 4 1984 5 0.3 5 1984 6 -8.1 3 1984 7 0.8 4 1984 8 2.1 5 1984 9 2.3 5 1984 10 -4.7 5 1984 11 3.6 4 1984 12 -2.7 5 1985 1 -4.6 5 1985 2 6.2 4 1985 3 -2.7 3 1985 4 12.3 4 1985 5 3.3 2 1985 6 -8.8 3 1985 7 -2.2 4 1985 8 8.2 4 1985 9 0.5 5 1985 10 -5.3 5 1985 11 -1.5 5 1985 12 0.8 5 1986 1 7.4 4 1986 2 -12.1 3 1986 3 -0.3 4 1986 4 0.6 5 1986 5 -5.6 5 1986 6 8.6 4 1986 7 2.0 2 1986 8 -7.0 3 1986 9 -4.7 5 1986 10 6.6 4 1986 11 -13.5 3 1986 12 -15.0 1 1987 1 -7.0 1 1987 2 -14.0 3 1987 3 -16.1 1 1987 4 -23.5 1 1987 5 -19.6 1 1987 6 -17.9 1 1987 7 -17.3 1 1987 8 -13.1 1 1987 9 -10.6 1 1987 10 -5.3 1 1987 11 -1.5 5 1987 12 -5.8 5 1988 1 -1.5 5 1988 2 -6.2 5 1988 3 1.2 4 1988 4 -3.0 5 1988 5 9.9 4 1988 6 -3.9 3 1988 7 10.5 4 1988 8 14.2 2 1988 9 18.7 2 1988 10 15.5 2 1988 11 22.0 2 1988 12 9.5 2 1989 1 12.7 2 1989 2 8.5 2 1989 3 5.5 2 1989 4 18.1 4 1989 5 15.1 2 1989 6 6.1 2 1989 7 8.5 2 1989 8 -5.6 3 1989 9 5.8 4 1989 10 7.8 2 1989 11 -1.8 3 1989 12 -5.3 5 1990 1 -1.9 5 1990 2 -18.4 3 1990 3 -8.2 4 1990 4 -0.7 4 1990 5 13.6 4 1990 6 0.0 3 1990 7 5.2 5 1990 8 -4.4 5 1990 9 -7.3 1 1990 10 -1.2 5 1990 11 -5.0 5 1990 12 -3.7 5 1991 1 4.2 5 1991 2 -0.2 5 1991 3 -10.1 3 1991 4 -11.5 1 1991 5 -17.9 1 1991 6 -5.5 5 1991 7 -1.5 5 1991 8 -6.8 3 1991 9 -16.2 3 1991 10 -13.5 1 1991 11 -6.9 1 1991 12 -18.3 1 1992 1 -26.0 1 1992 2 -10.3 1 1992 3 -22.1 1 1992 4 -16.5 1 1992 5 0.4 4 1992 6 -11.9 3 1992 7 -6.5 1 1992 8 0.8 5 1992 9 0.7 5 1992 10 -18.0 3 1992 11 -6.9 1 1992 12 -6.6 1 1993 1 -9.2 1 1993 2 -8.7 1 1993 3 -8.8 1 1993 4 -18.5 3 1993 5 -7.3 1 1993 6 -14.4 1 1993 7 -10.1 1 1993 8 -13.0 1 1993 9 -7.0 1 1993 10 -13.0 1 1993 11 0.4 4 1993 12 0.7 5 1994 1 -2.1 5 1994 2 0.3 5 1994 3 -10.0 3 1994 4 -19.9 3 1994 5 -11.6 1 1994 6 -9.4 1 1994 7 -16.7 1 1994 8 -15.7 1 1994 9 -16.2 1 1994 10 -13.5 1 1994 11 -7.3 1 1994 12 -13.1 1 1995 1 -5.8 1 1995 2 -3.3 5 1995 3 2.8 5 1995 4 -14.4 3 1995 5 -8.6 1 1995 6 -2.2 5 1995 7 4.0 4 1995 8 1.2 5 1995 9 3.4 5 1995 10 -0.6 5 1995 11 1.7 5 1995 12 -7.8 3 1996 1 7.7 4 1996 2 0.6 5 1996 3 5.2 5 1996 4 5.3 5 1996 5 1.7 5 1996 6 10.5 4 1996 7 6.6 2 1996 8 4.8 2 1996 9 6.9 2 1996 10 5.2 2 1996 11 -0.1 5 1996 12 7.3 4 1997 1 3.5 2 1997 2 14.0 4 1997 3 -7.0 3 1997 4 -14.3 3 1997 5 -19.0 1 1997 6 -24.3 1 1997 7 -9.0 1 1997 8 -18.0 3 1997 9 -14.1 1 1997 10 -16.7 1 1997 11 -13.9 1 1997 12 -10.8 1 1998 1 -22.9 3 1998 2 -22.2 1 1998 3 -26.1 1 1998 4 -22.4 1 1998 5 -0.3 4 1998 6 8.2 4 1998 7 12.8 2 1998 8 9.7 2 1998 9 12.1 2 1998 10 11.2 2 1998 11 13.2 2 1998 12 11.7 2 1999 1 14.7 2 1999 2 7.1 2 1999 3 7.6 2 1999 4 16.8 4 1999 5 0.9 3 1999 6 -0.5 5 1999 7 4.4 4 1999 8 3.3 5 1999 9 0.2 5 1999 10 9.5 4 1999 11 11.6 2 1999 12 12.4 2 2000 1 3.2 2 2000 2 13.0 4 2000 3 7.6 2 2000 4 15.4 2 2000 5 6.0 2 2000 6 -6.5 3 2000 7 -4.0 5 2000 8 4.5 4 2000 9 10.1 2 2000 10 11.6 2 2000 11 20.7 2 2000 12 7.7 2 2001 1 7.4 2 2001 2 12.0 2 2001 3 4.9 2 2001 4 1.4 5 2001 5 -9.9 3 2001 6 2.4 4 2001 7 -3.3 5 2001 8 -8.3 5 2001 9 1.7 4 2001 10 -3.0 5 2001 11 9.0 4 2001 12 -11.2 3 2002 1 2.5 4 2002 2 7.1 4 2002 3 -5.6 3 2002 4 -3.4 5 2002 5 -13.8 3 2002 6 -6.8 1 2002 7 -7.1 5 2002 8 -14.3 3 2002 9 -7.3 1 2002 10 -7.6 1 2002 11 -4.1 5 2002 12 -13.4 3 2003 1 -2.0 4 2003 2 -9.3 3 2003 3 -6.6 1 2003 4 -5.9 5 2003 5 -5.0 5 2003 6 -13.2 3 2003 7 3.2 4 2003 8 -1.2 5 2003 9 -1.6 5 2003 10 -2.9 5 2003 11 -2.4 5 2003 12 9.0 4 2004 1 -12.8 3 2004 2 9.0 4 2004 3 0.9 2 2004 4 -16.2 3 2004 5 13.0 4 2004 6 -13.9 3 2004 7 -6.4 1 2004 8 -6.7 5 2004 9 -3.2 5 2004 10 -3.0 5 2004 11 -7.7 5 2004 12 -10.1 1 2005 1 1.2 4 2005 2 -29.5 3 2005 3 -1.3 4 2005 4 -10.8 3 2005 5 -11.7 1 2005 6 0.5 4 2005 7 1.6 5 2005 8 -6.5 3 2005 9 3.4 4 2005 10 11.5 4 2005 11 -2.2 3 2005 12 -1.4 5 2006 1 11.8 4 2006 2 -0.6 3 2006 3 11.4 4 2006 4 13.0 2 2006 5 -7.7 3 2006 6 -6.7 1 2006 7 -8.6 5 2006 8 -14.1 1 2006 9 -4.6 1 2006 10 -16.4 3 2006 11 -0.7 4 2006 12 -5.3 5 2007 1 -8.9 5 2007 2 -2.8 1 2007 3 -1.2 5 2007 4 -4.2 5 2007 5 -2.5 5 2007 6 5.4 4 2007 7 -4.8 3 2007 8 1.8 4 2007 9 2.2 5 2007 10 6.1 5 2007 11 9.9 2 2007 12 13.3 2 2008 1 12.7 2 2008 2 21.0 2 2008 3 10.2 2 2008 4 4.4 2 2008 5 -3.5 3 2008 6 2.9 4 2008 7 2.3 5 2008 8 8.0 4 2008 9 13.7 2 2008 10 14.2 2 2008 11 17.5 2 2008 12 11.6 2 2009 1 8.2 2 2009 2 15.2 2 2009 3 -1.3 3 2009 4 8.0 4 2009 5 -5.0 3 2009 6 -2.8 5 2009 7 2.1 5 2009 8 -3.9 5 2009 9 3.6 4 2009 10 -14.9 3 2009 11 -6.4 1 2009 12 -9.0 5 2010 1 -8.3 1 2010 2 -18.2 3 2010 3 -10.8 1 2010 4 12.1 4 2010 5 10.5 2 2010 6 1.3 2 2010 7 18.7 4 2010 8 17.0 2 2010 9 25.8 2 2010 10 19.7 2 2010 11 16.3 2 2010 12 26.4 2 2011 1 18.1 2 2011 2 22.6 2 2011 3 17.4 2 2011 4 23.9 2 2011 5 2.1 3 2011 6 0.9 5 2011 7 9.1 4 2011 8 2.6 2 2011 9 11.1 4 2011 10 9.7 2 2011 11 12.4 2 2011 12 22.2 2 2012 1 9.6 2 2012 2 0.8 2 2012 3 2.4 5 2012 4 -6.2 3 2012 5 -2.4 5 2012 6 -10.2 3 2012 7 0.1 4 2012 8 -6.2 5 2012 9 3.2 4 2012 10 2.3 5 2012 11 3.8 5 2012 12 -7.4 3 2013 1 -0.3 4 2013 2 -5.6 5 2013 3 8.7 4 2013 4 1.3 2 2013 5 8.0 4 2013 6 10.5 2 2013 7 7.4 2 2013 8 -0.2 5 2013 9 4.4 5 2013 10 -2.1 5 2013 11 10.1 4 2013 12 -0.7 3 2014 1 11.2 4 2014 2 -1.7 3 2014 3 -12.0 3 2014 4 6.4 4 2014 5 4.3 2 2014 6 -0.8 5 2014 7 -4.0 5 2014 8 -10.1 3 2014 9 -6.6 1 2014 10 -8.2 5 2014 11 -8.0 1 2014 12 -7.6 1 2015 1 -8.7 1 2015 2 -0.5 4 2015 3 -10.7 3 2015 4 -3.1 1 2015 5 -13.11 3 2015 6 -10.30 1 2015 7 -13.83 1 2015 8 -19.02 1 2015 9 -16.66 1 2015 10 -21.30 1 2015 11 -3.23 4 2015 12 -10.08 3 2016 1 -21.75 3 2016 2 -19.06 1 2016 3 -6.34 1 2016 4 -19.07 3 2016 5 2.83 4 2016 6 3.72 5 2016 7 3.70 5 2016 8 4.67 5 2016 9 13.82 4 2016 10 -4.51 3 2016 11 0.68 4 2016 12 0.43 5 2017 1 0.50 5 2017 2 -2.24 5 2017 3 3.80 4 2017 4 -6.31 3 2017 5 0.68 4 2017 6 -9.45 3 2017 7 6.51 4 2017 8 3.50 2 2017 9 6.16 5 2017 10 10.64 2 2017 11 10.40 2 2017 12 -2.61 3 2018 1 8.93 4 2018 2 -7.74 3 2018 3 8.42 4 2018 4 4.02 2 2018 5 2.69 5 2018 6 -6.27 3 2018 7 1.79 4 2018 8 -6.70 3 2018 9 -8.49 5 2018 10 2.61 4 2018 11 0.56 5 2018 12 9.14 4 2019 1 -2.24 3 2019 2 -14.62 3 2019 3 -6.48 1 2019 4 -2.43 5 2019 5 -7.41 5 2019 6 -9.99 1 2019 7 -5.86 1 2019 8 -3.14 5 2019 9 -12.72 3 2019 10 -5.19 1 2019 11 -9.45 5 2019 12 -6.72 1 2020 1 0.65 4 2020 2 -2.60 5 2020 3 -6.02 5 2020 4 -0.75 5 2020 5 2.57 5 2020 6 -9.13 3 2020 7 4.25 4 2020 8 8.39 2 2020 9 9.93 2 2020 10 4.37 2