# year value 1880 0.62 1881 -0.29 1882 0.29 1883 -0.43 1884 -0.55 1885 -0.86 1886 0.42 1887 0.18 1888 0.08 1889 0.58 1890 0.4 1891 -0.98 1892 -0.12 1893 -0.42 1894 -0.07 1895 0.25 1896 0.69 1897 0.12 1898 0.48 1899 -0.06 1900 0.37 1901 -0.02 1902 -0.09 1903 -0.6 1904 -0.58 1905 -0.51 1906 0.31 1907 -0.33 1908 -0.04 1909 -0.4 1910 -0.49 1911 -0.55 1912 -0.1 1913 0.08 1914 0.38 1915 -0.01 1916 0.03 1917 -0.45 1918 0.1 1919 0.18 1920 -0.1 1921 -0.1 1922 -0.42 1923 -0.04 1924 -0.9 1925 -0.54 1926 0.15 1927 -0.27 1928 -0.73 1929 -0.01 1930 -0.15 1931 -0.31 1932 0.23 1933 -0.4 1934 -0.14 1935 -0.48 1936 -0.32 1937 -0.36 1938 -0.44 1939 0.35 1940 -0.44 1941 -0.43 1942 0.06 1943 0.35 1944 0.1 1945 0.05 1946 -0.21 1947 -0.12 1948 -0.27 1949 -0.33 1950 -0.2 1951 -0.21 1952 -0.01 1953 -0.15 1954 -0.21 1955 0.22 1956 -0.49 1957 -0.2 1958 -0.18 1959 -0.21 1960 0.23 1961 0.1 1962 0.06 1963 0.19 1964 -0.3 1965 -0.19 1966 -0.37 1967 -0.41 1968 0.3 1969 -0.1 1970 0.24 1971 -0.32 1972 -0.21 1973 0.35 1974 0.03 1975 0.04 1976 -0.07 1977 0.04 1978 0.39 1979 0.65 1980 0.43 1981 0.66 1982 0.47 1983 0.52 1984 0.34 1985 0.21 1986 0.16 1987 0.23 1988 0.24 1989 0.73 1990 0.58 1991 0.47 1992 -0.16 1993 0.2 1994 0.05 1995 0.56 1996 0.18 1997 0.4 1998 0.32 1999 0.87 2000 0.42 2001 0.82 2002 0.06 2003 0.54 2004 0.5 2005 0.57 2006 0.59 2007 0.59 2008 0.79 2009 0.89 2010 0.62 2011 0.75 2012 0.82 2013 0.94 2014 0.91 2015 0.75 2016 1.16 2017 1.06 2018 1.43 2019 1.13