Year	Years
1800	33.87
1801	33.87
1802	33.87
1803	33.87
1804	33.87
1805	33.87
1806	33.87
1807	33.87
1808	33.87
1809	33.87
1810	33.87
1811	33.87
1812	33.87
1813	33.87
1814	33.87
1815	33.87
1816	33.87
1817	33.87
1818	33.87
1819	33.87
1820	33.87
1821	33.87
1822	33.87
1823	33.87
1824	33.87
1825	33.87
1826	33.87
1827	33.87
1828	33.87
1829	33.87
1830	33.87
1831	33.87
1832	33.87
1833	33.87
1834	33.87
1835	33.87
1836	33.87
1837	33.87
1838	33.87
1839	33.87
1840	33.87
1841	33.87
1842	33.87
1843	33.87
1844	33.87
1845	33.87
1846	33.87
1847	33.87
1848	33.87
1849	33.87
1850	33.87
1851	33.87
1852	33.87
1853	33.87
1854	33.87
1855	33.87
1856	33.87
1857	33.87
1858	33.87
1859	33.87
1860	33.87
1861	33.87
1862	33.87
1863	33.87
1864	33.87
1865	33.87
1866	33.87
1867	33.87
1868	33.87
1869	33.87
1870	33.87
1871	33.87
1872	33.87
1873	33.87
1874	33.87
1875	33.87
1876	33.87
1877	33.87
1878	33.87
1879	33.87
1880	33.87
1881	33.87
1882	33.54
1883	33.22
1884	32.9
1885	32.57
1886	32.25
1887	31.92
1888	31.6
1889	31.28
1890	30.95
1891	31.51
1892	32.06
1893	32.62
1894	33.17
1895	33.73
1896	34.28
1897	34.84
1898	35.39
1899	35.95
1900	36.5
1901	36.64
1902	36.78
1903	36.92
1904	37.06
1905	36.71
1906	36.36
1907	36.01
1908	35.66
1909	35.31
1910	34.96
1911	34.61
1912	34.26
1913	33.91
1914	33.56
1915	33.22
1916	32.87
1917	33.07
1918	28.89
1919	33.47
1920	33.67
1921	33.87
1922	34.65
1923	35.43
1924	36.22
1925	37
1926	37.78
1927	38.57
1928	39.35
1929	38.6
1930	37.85
1931	37.1
1932	36.36
1933	35.61
1934	34.86
1935	34.11
1936	33.36
1937	34.86
1938	36.36
1939	37.85
1940	39.35
1941	41.2
1942	43.05
1943	42.74
1944	42.42
1945	42.1
1946	41.78
1947	41.94
1948	42.1
1949	42.25
1950	42.41
1951	44.06
1952	45.72
1953	48.82
1954	51.92
1955	55.02
1956	58.12
1957	59.01
1958	59.91
1959	60.81
1960	61.71
1961	62.09
1962	62.47
1963	62.85
1964	63.24
1965	63.62
1966	64
1967	64.38
1968	64.76
1969	65.14
1970	65.53
1971	65.36
1972	65.2
1973	65.03
1974	64.87
1975	64.7
1976	64.54
1977	64.37
1978	64.21
1979	64.05
1980	63.54
1981	63.17
1982	63.27
1983	63.37
1984	63.54
1985	63.92
1986	64.33
1987	64.75
1988	64.68
1989	64.77
1990	65.16
1991	65.12
1992	65.28
1993	65.66
1994	65.97
1995	65.7
1996	65.84
1997	65.87
1998	66.23
1999	66.47
2000	67.03
2001	67.67
2002	68.23
2003	68.51
2004	68.88
2005	69.29
2006	69.58
2007	70.04
2008	70.28
2009	70.53
2010	70.78
2011	71.03
2012	71.28