# year value 1900 0.06 1901 -0.3 1902 -0.72 1903 -0.47 1904 -0.26 1905 -0.07 1906 -0.33 1907 -0.51 1908 -0.49 1909 0.11 1910 -0.41 1911 -0.15 1912 -0.64 1913 -0.12 1914 -0.18 1915 -0.08 1916 -0.29 1917 -0.25 1918 -0.06 1919 -0.29 1920 -0.38 1921 -0.22 1922 -0.12 1923 0.25 1924 0.1 1925 -0.11 1926 0.08 1927 0.2 1928 0.18 1929 0.07 1930 0.1 1931 0.26 1932 0.02 1933 -0.19 1934 0.13 1935 -0.14 1936 0.08 1937 0.41 1938 0.53 1939 -0.08 1940 0.16 1941 -0.06 1942 0.16 1943 0.25 1944 0.32 1945 0.02 1946 0.02 1947 0.36 1948 0.27 1949 0.07 1950 -0.27 1951 0.1 1952 -0.16 1953 0.04 1954 0.19 1955 -0.07 1956 -0.46 1957 0.06 1958 0.02 1959 -0.08 1960 -0.01 1961 0.06 1962 0.15 1963 0.35 1964 -0.28 1965 -0.14 1966 -0.09 1967 0.18 1968 -0.11 1969 0.08 1970 0.04 1971 0.11 1972 -0.17 1973 0.09 1974 -0.28 1975 -0.02 1976 -0.44 1977 0.25 1978 0.06 1979 0.26 1980 0.25 1981 0.33 1982 0.04 1983 0.55 1984 0.02 1985 0.13 1986 0.03 1987 0.32 1988 0.35 1989 0.28 1990 0.5 1991 0.46 1992 -0.16 1993 -0.11 1994 0.56 1995 0.67 1996 0.29 1997 0.72 1998 0.69 1999 0.64 2000 0.4 2001 0.81 2002 0.71 2003 0.9 2004 0.95 2005 1.26 2006 0.96 2007 0.96 2008 0.95 2009 0.98 2010 1.14 2011 1.01 2012 1.08 2013 1.05 2014 0.9 2015 1.32 2016 1.14 2017 1.17 2018 1.05