1891	-0.18
1892	-0.38
1893	-0.53
1894	-0.44
1895	-0.25
1896	-0.15
1897	-0.23
1898	-0.45
1899	-0.38
1900	-0.12
1901	-0.3
1902	-0.37
1903	-0.46
1904	-0.49
1905	-0.36
1906	-0.37
1907	-0.4
1908	-0.66
1909	-0.74
1910	-0.68
1911	-0.62
1912	-0.5
1913	-0.64
1914	-0.44
1915	-0.42
1916	-0.64
1917	-0.63
1918	-0.42
1919	-0.62
1920	-0.44
1921	-0.33
1922	-0.4
1923	-0.35
1924	-0.39
1925	-0.27
1926	-0.19
1927	-0.34
1928	-0.36
1929	-0.34
1930	-0.11
1931	-0.24
1932	-0.39
1933	-0.55
1934	-0.4
1935	-0.38
1936	-0.33
1937	-0.27
1938	-0.35
1939	-0.35
1940	-0.24
1941	-0.11
1942	-0.06
1943	-0.01
1944	-0.04
1945	-0.06
1946	-0.19
1947	-0.31
1948	-0.27
1949	-0.34
1950	-0.26
1951	-0.03
1952	-0.1
1953	-0.13
1954	-0.21
1955	-0.37
1956	-0.24
1957	0.05
1958	0.04
1959	-0.02
1960	-0.17
1961	-0.09
1962	-0.04
1963	0.12
1964	-0.23
1965	-0.19
1966	-0.04
1967	0.03
1968	0
1969	0
1970	-0.16
1971	-0.39
1972	-0.12
1973	-0.27
1974	-0.27
1975	-0.47
1976	-0.34
1977	-0.13
1978	-0.14
1979	-0.12
1980	-0.13
1981	-0.12
1982	-0.06
1983	-0.15
1984	-0.14
1985	-0.24
1986	-0.05
1987	-0.05
1988	-0.16
1989	-0.09
1990	0.11
1991	0.13
1992	-0.02
1993	-0.04
1994	0.13
1995	0
1996	0.02
1997	0.22
1998	0.03
1999	-0.22
2000	-0.05
2001	0.04
2002	0.1
2003	0.13
2004	0.24
2005	0.19
2006	0.08
2007	-0.04
2008	-0.06
2009	0.17
2010	-0.07
2011	-0.07
2012	-0.02
2013	0.16
2014	0.45
2015	0.65
2016	0.43
2017	0.35
2018	0.45