# year value 1880 -1.03 1881 0.69 1882 -0.59 1883 -0.43 1884 -0.47 1885 0.74 1886 0.14 1887 1.36 1888 -0.37 1889 1.88 1890 0.15 1891 -0.56 1892 -0.78 1893 -1.19 1894 0.67 1895 0.56 1896 -0.38 1897 -0.09 1898 -0.24 1899 -1.13 1900 1.1 1901 0.35 1902 0.32 1903 -0.51 1904 0.13 1905 0.48 1906 -0.37 1907 -0.43 1908 0.18 1909 -0.95 1910 2.43 1911 0.61 1912 -1.15 1913 -0.44 1914 0.75 1915 0.02 1916 0.31 1917 -2.02 1918 0.42 1919 0.09 1920 -1.1 1921 0.41 1922 -0.55 1923 -0.56 1924 -0.76 1925 1.59 1926 0.95 1927 0.08 1928 0.85 1929 -0.09 1930 0.6 1931 0.4 1932 -0.06 1933 -0.33 1934 2.82 1935 -0.58 1936 1.2 1937 0.18 1938 0.55 1939 1.3 1940 1.08 1941 0.65 1942 0.03 1943 0.27 1944 -0.57 1945 -0.28 1946 1.42 1947 0.29 1948 -0.42 1949 0.72 1950 -0.68 1951 -0.62 1952 -0.31 1953 -0.47 1954 0.07 1955 -0.34 1956 0.27 1957 -0.12 1958 0.05 1959 0.47 1960 -0.07 1961 0.21 1962 -0.04 1963 0.8 1964 -0.54 1965 -0.91 1966 0.72 1967 -0.18 1968 0.17 1969 0.02 1970 -0.75 1971 -0.32 1972 1.15 1973 -0.01 1974 0.73 1975 -1.45 1976 0.09 1977 0.78 1978 0.63 1979 -0.11 1980 0.08 1981 1.27 1982 -0.24 1983 -0.55 1984 0.24 1985 1.38 1986 1.74 1987 1.55 1988 0.99 1989 1.35 1990 1.01 1991 0.48 1992 2.16 1993 0.86 1994 1.64 1995 -0.25 1996 0.34 1997 0.58 1998 0.24 1999 0.37 2000 1.98 2001 1.32 2002 -0.09 2003 0.98 2004 2.14 2005 1.03 2006 1.57 2007 1.82 2008 0.08 2009 0.66 2010 0.43 2011 0.11 2012 2.62 2013 0.43 2014 1.01 2015 1.7 2016 1.95 2017 1.74 2018 1.4 2019 0.02