# year value 1880 0.35 1881 -0.42 1882 1.05 1883 -1.78 1884 0.57 1885 -0.06 1886 -0.29 1887 -1.16 1888 -0.63 1889 -0.5 1890 0.31 1891 -0.69 1892 -0.55 1893 0.4 1894 0.88 1895 -0.51 1896 -0.6 1897 0.24 1898 0.23 1899 -0.22 1900 -1.5 1901 -0.05 1902 -0.85 1903 -0.36 1904 0.8 1905 -0.1 1906 0 1907 -0.92 1908 -0.33 1909 -0.33 1910 -0.31 1911 -0.17 1912 0.27 1913 0.61 1914 0.6 1915 -0.11 1916 0.93 1917 -0.92 1918 0.72 1919 -1.11 1920 2.17 1921 0.7 1922 0.47 1923 0.35 1924 0.17 1925 -0.4 1926 0.14 1927 0.75 1928 -0.72 1929 -0.88 1930 0.42 1931 -0.54 1932 -1.39 1933 -0.36 1934 1.66 1935 -1 1936 0.73 1937 0.63 1938 -0.65 1939 -0.93 1940 -0.32 1941 -1.07 1942 0.1 1943 1.48 1944 -0.48 1945 1.86 1946 1.67 1947 1.89 1948 1.75 1949 0.21 1950 1.07 1951 -0.28 1952 0.72 1953 0.77 1954 -0.24 1955 -0.93 1956 -0.71 1957 0.15 1958 -0.96 1959 1.16 1960 0.52 1961 1.45 1962 -1.07 1963 -0.01 1964 0.28 1965 -0.67 1966 0.61 1967 0.48 1968 0.91 1969 0.22 1970 -1.34 1971 -0.03 1972 0.55 1973 -0.59 1974 0.23 1975 0.24 1976 -0.44 1977 0.56 1978 -0.43 1979 0.12 1980 -1.27 1981 1.11 1982 -0.19 1983 0.78 1984 -1.11 1985 0.14 1986 0.63 1987 -1.4 1988 0.46 1989 1.49 1990 1.41 1991 -0.24 1992 1.06 1993 0.96 1994 1.39 1995 0.09 1996 -0.09 1997 0.58 1998 0.87 1999 1.54 2000 2.05 2001 1.68 2002 1.59 2003 1.6 2004 0.2 2005 0.66 2006 0.49 2007 2.71 2008 1.12 2009 2.1 2010 0.56 2011 2.16 2012 1.84 2013 0.19 2014 1.89 2015 1.42 2016 1.16 2017 2.07 2018 2.36 2019 1.63