# year value 1880 0.26 1881 0.5 1882 1.14 1883 0.03 1884 0.01 1885 0.11 1886 1.06 1887 0.47 1888 0.12 1889 0.53 1890 0.63 1891 -0.99 1892 0.33 1893 -0.47 1894 0.29 1895 0.68 1896 1.04 1897 0.56 1898 0.28 1899 0.14 1900 0.48 1901 -0.02 1902 -0.2 1903 -0.65 1904 -0.11 1905 -0.39 1906 -0.13 1907 -0.42 1908 -0.13 1909 -0.49 1910 -0.74 1911 -0.47 1912 -0.3 1913 0.15 1914 0.38 1915 -0.16 1916 -0.13 1917 -0.55 1918 -0.34 1919 -0.03 1920 -0.52 1921 -0.89 1922 -0.62 1923 -0.09 1924 -0.53 1925 -0.57 1926 -0.06 1927 -0.14 1928 -0.71 1929 -0.14 1930 -0.24 1931 -0.18 1932 0.32 1933 -0.53 1934 -0.61 1935 -0.28 1936 -0.24 1937 -0.53 1938 -0.14 1939 -0.01 1940 -0.07 1941 -0.06 1942 0.25 1943 0.26 1944 0.48 1945 0.42 1946 -0.26 1947 0.02 1948 -0.16 1949 -0.07 1950 -0.05 1951 -0.66 1952 0.24 1953 0.18 1954 -0.13 1955 -0.03 1956 -0.82 1957 0.16 1958 -0.12 1959 -0.16 1960 0.49 1961 -0.17 1962 0.03 1963 0.37 1964 -0.19 1965 -0.13 1966 -0.53 1967 -0.32 1968 0.26 1969 0.1 1970 0.41 1971 -0.65 1972 -0.22 1973 0.28 1974 -0.31 1975 0.09 1976 -0.38 1977 0.04 1978 0.56 1979 0.65 1980 0.6 1981 0.62 1982 0.53 1983 0.7 1984 0.47 1985 0.22 1986 0.23 1987 0.75 1988 0.47 1989 0.64 1990 0.63 1991 0.58 1992 -0.06 1993 0.35 1994 0.29 1995 0.4 1996 0.22 1997 0.08 1998 0.53 1999 1.14 2000 0.31 2001 0.49 2002 0.68 2003 0.56 2004 0.63 2005 0.79 2006 0.95 2007 0.42 2008 1.01 2009 1.06 2010 0.41 2011 0.67 2012 1.06 2013 1.01 2014 0.89 2015 0.85 2016 1.22 2017 1.33 2018 1.43 2019 1.26