# year value 1880 -1.06 1881 -1.25 1882 -0.97 1883 -0.78 1884 -0.76 1885 -0.29 1886 -0.74 1887 -0.25 1888 0 1889 -0.46 1890 -0.22 1891 -0.28 1892 -0.27 1893 -0.31 1894 -0.11 1895 -0.17 1896 -0.39 1897 -0.27 1898 -0.31 1899 0.43 1900 -0.16 1901 0.15 1902 -0.41 1903 -0.43 1904 -0.02 1905 -0.18 1906 -0.2 1907 -0.22 1908 -0.45 1909 -0.13 1910 -0.14 1911 -0.05 1912 -1.13 1913 -0.12 1914 -0.09 1915 -0.38 1916 -0.19 1917 -0.01 1918 -0.05 1919 -0.38 1920 -0.48 1921 -0.01 1922 -0.17 1923 0.09 1924 0.13 1925 0.36 1926 0.37 1927 0.35 1928 0.01 1929 0.22 1930 0.04 1931 0.27 1932 0.29 1933 0.26 1934 0.09 1935 -0.11 1936 0.35 1937 0.41 1938 0.43 1939 0.15 1940 0.05 1941 0.02 1942 0.4 1943 0.43 1944 0.22 1945 0.49 1946 0.12 1947 0.36 1948 -0.06 1949 0.3 1950 -0.42 1951 0.41 1952 -0.21 1953 0.23 1954 0.31 1955 -0.12 1956 -0.45 1957 0.06 1958 0.03 1959 0.01 1960 0 1961 -0.14 1962 0.01 1963 0.4 1964 -0.24 1965 -0.07 1966 -0.05 1967 -0.08 1968 -0.17 1969 -0.02 1970 -0.25 1971 0.03 1972 -0.27 1973 0.04 1974 -0.21 1975 0.05 1976 -0.29 1977 0.23 1978 0.24 1979 0.18 1980 0.41 1981 -0.02 1982 -0.07 1983 0.59 1984 -0.14 1985 -0.17 1986 -0.02 1987 0.26 1988 0.63 1989 0.32 1990 0.71 1991 0.48 1992 -0.2 1993 -0.01 1994 0.55 1995 0.97 1996 0.08 1997 0.64 1998 0.84 1999 0.77 2000 0.03 2001 0.97 2002 0.78 2003 0.85 2004 0.77 2005 1.07 2006 1.05 2007 0.96 2008 0.96 2009 0.72 2010 1.07 2011 0.76 2012 0.91 2013 0.96 2014 1.14 2015 1.2 2016 0.98 2017 1.1 2018 1.11