# year value 1880 -0.57 1881 32767 1882 32767 1883 32767 1884 32767 1885 32767 1886 32767 1887 32767 1888 32767 1889 -1.02 1890 -2.38 1891 -1.25 1892 -0.67 1893 -1.38 1894 -0.46 1895 -0.24 1896 -0.74 1897 0.16 1898 -0.79 1899 -0.9 1900 -0.12 1901 0.25 1902 0.12 1903 -0.14 1904 -0.3 1905 0.02 1906 -0.72 1907 -0.89 1908 -0.17 1909 -0.36 1910 -0.21 1911 -0.83 1912 -0.48 1913 0.34 1914 0.44 1915 -0.45 1916 -0.99 1917 -0.69 1918 -0.45 1919 -0.25 1920 -0.87 1921 -1.2 1922 -0.47 1923 -0.45 1924 -0.75 1925 -0.21 1926 -0.13 1927 -0.71 1928 -0.67 1929 -0.25 1930 -0.03 1931 -0.57 1932 -0.05 1933 -0.54 1934 0.01 1935 -0.54 1936 -0.42 1937 -0.18 1938 -0.55 1939 0.07 1940 0.34 1941 0.33 1942 -0.33 1943 -0.41 1944 0.56 1945 0.03 1946 -0.28 1947 -0.2 1948 0.01 1949 -0.16 1950 -0.07 1951 0.25 1952 -0.11 1953 0.09 1954 -0.32 1955 -0.41 1956 -0.37 1957 -0.09 1958 0.14 1959 0.25 1960 0.06 1961 0.19 1962 -0.23 1963 0.2 1964 -0.57 1965 0.33 1966 0.12 1967 -0.18 1968 -0.02 1969 0.35 1970 0.13 1971 -0.22 1972 0.33 1973 -0.01 1974 -0.26 1975 -0.18 1976 -0.13 1977 0.3 1978 0.04 1979 0.19 1980 0.13 1981 -0.06 1982 0.53 1983 0.75 1984 0.08 1985 0.15 1986 0.25 1987 0.81 1988 0.14 1989 0.22 1990 0.09 1991 0.32 1992 0.24 1993 0.37 1994 0.34 1995 0.56 1996 -0.07 1997 1.3 1998 0.94 1999 0.27 2000 0.22 2001 0.43 2002 0.59 2003 0.41 2004 0.14 2005 0.81 2006 0.89 2007 0.13 2008 0.61 2009 0.61 2010 0.49 2011 0.64 2012 0.81 2013 0.39 2014 0.93 2015 1.54 2016 0.89 2017 1.21 2018 0.47