# year value 1880 0.09 1881 -0.45 1882 -0.12 1883 -0.28 1884 -0.22 1885 -0.64 1886 -0.57 1887 -0.57 1888 -0.38 1889 0.08 1890 -0.38 1891 -0.58 1892 -0.14 1893 -0.94 1894 -0.36 1895 -0.5 1896 0.2 1897 0.3 1898 -0.12 1899 -0.03 1900 0 1901 -0.22 1902 0.14 1903 -0.28 1904 -0.56 1905 -0.48 1906 -0.21 1907 -0.69 1908 -0.05 1909 -0.3 1910 -0.49 1911 -0.53 1912 -0.1 1913 -0.74 1914 -0.24 1915 -0.27 1916 -0.18 1917 -1.08 1918 -0.79 1919 -0.05 1920 -0.56 1921 -0.1 1922 -0.17 1923 -0.42 1924 0.06 1925 -0.16 1926 -0.28 1927 -0.26 1928 0.02 1929 0 1930 -0.3 1931 0.01 1932 -0.31 1933 -0.17 1934 -0.38 1935 -0.17 1936 -0.06 1937 -0.11 1938 -0.07 1939 -0.34 1940 -0.25 1941 0.41 1942 0.28 1943 -0.39 1944 -0.17 1945 -0.17 1946 0.1 1947 0.1 1948 -0.1 1949 -0.03 1950 -0.24 1951 -0.15 1952 0.05 1953 0.08 1954 -0.02 1955 -0.08 1956 -0.18 1957 -0.38 1958 0.51 1959 0.14 1960 -0.17 1961 0.09 1962 -0.09 1963 -0.21 1964 0.23 1965 -0.37 1966 0.04 1967 -0.21 1968 -0.48 1969 0.48 1970 0.12 1971 -0.23 1972 -0.18 1973 0.48 1974 -0.12 1975 0 1976 -0.39 1977 0.11 1978 0.21 1979 0.22 1980 0.53 1981 0.3 1982 0.01 1983 0.39 1984 0.36 1985 0.23 1986 0.21 1987 0.47 1988 0.73 1989 0.09 1990 0.24 1991 0.48 1992 0.17 1993 0.2 1994 0.42 1995 0.45 1996 0.42 1997 0.2 1998 1.11 1999 0.62 2000 0.61 2001 0.74 2002 0.96 2003 0.88 2004 0.88 2005 0.92 2006 0.72 2007 0.81 2008 0.74 2009 0.81 2010 1.49 2011 0.69 2012 0.77 2013 0.98 2014 0.9 2015 0.98 2016 1.57 2017 1.12 2018 1.14 2019 1.01