1871	1.66
1872	0.56
1873	0.8
1874	0.93
1875	2.13
1876	2.3
1877	2.78
1878	4.57
1879	4.78
1880	4.32
1881	5
1882	2.43
1883	1.05
1884	1.42
1885	1.68
1886	3.09
1887	3.67
1888	5.8
1889	4.14
1890	2.05
1891	3.27
1892	3.02
1893	4.16
1894	1.47
1895	2.74
1896	3.26
1897	1.95
1898	1.74
1899	1.84
1900	2.81
1901	2.26
1902	3.38
1903	0.45
1904	-1.23
1905	-0.11
1906	0.05
1907	0.67
1908	0.41
1909	1.32
1910	1.08
1911	1.22
1912	-1.23
1913	-3.72
1914	-2.89
1915	-1.72
1916	-0.44
1917	0.33
1918	-0.14
1919	-0.38
1920	-2.55
1921	-2.49
1922	-2.57
1923	-2
1924	-0.51
1925	-2.4
1926	-1.73
1927	-1.19
1928	-1.8
1929	-0.62
1930	-3.1
1931	-1.1
1932	-0.23
1933	-1.47
1934	-2.11
1935	-1.36
1936	-0.67
1937	-2.83
1938	-1.62
1939	-1.95
1940	-0.27
1941	0.41
1942	0.31
1943	-0.89
1944	1.04
1945	1.68
1946	0.3
1947	-2.45
1948	-3.42
1949	-3.7
1950	-4.18
1951	-3.05
1952	-1.83
1953	0.51
1954	-1.46
1955	-0.09
1956	0.18
1957	-1.7
1958	-0.36
1959	-2.45
1960	-2.19
1961	-3.34
1962	-2.75
1963	-1.78
1964	-1.41
1965	-0.28
1966	-0.83
1967	-1.7
1968	-0.25
1969	0.3
1970	0.21
1971	0.37
1972	-1.78
1973	-1.81
1974	-2.03
1975	-1.5
1976	-1.5
1977	-0.57
1978	-0.65
1979	-0.69
1980	-0.84
1981	0.95
1982	-1.11
1983	-1.84
1984	-0.98
1985	-1.16
1986	-2.56
1987	-1.56
1988	-1.17
1989	-2.12
1990	-3.19
1991	-2.51
1992	-1.27
1993	-1.73
1994	-3.44
1995	-1.59
1996	1.15
1997	1.61
1998	1.93
1999	1.4
2000	1.33
2001	2.15
2002	0.6
2003	1.14
2004	2.88
2005	3.87
2006	3.38
2007	1.56
2008	1.35
2009	0.92