Year	Years
1800	33.5
1801	33.5
1802	33.5
1803	33.5
1804	33.5
1805	33.5
1806	33.5
1807	33.5
1808	33.5
1809	33.5
1810	33.5
1811	33.5
1812	33.5
1813	33.5
1814	33.5
1815	33.5
1816	33.5
1817	33.5
1818	33.5
1819	33.5
1820	33.5
1821	33.5
1822	33.5
1823	33.5
1824	33.5
1825	33.5
1826	33.5
1827	33.5
1828	33.5
1829	33.5
1830	33.5
1831	33.5
1832	33.5
1833	33.5
1834	33.5
1835	33.5
1836	33.5
1837	33.5
1838	33.5
1839	33.5
1840	33.5
1841	33.5
1842	33.5
1843	33.5
1844	33.5
1845	33.5
1846	33.5
1847	33.5
1848	33.5
1849	33.5
1850	33.5
1851	33.5
1852	33.5
1853	33.5
1854	33.5
1855	33.5
1856	33.5
1857	33.5
1858	33.5
1859	33.5
1860	33.5
1861	33.5
1862	33.5
1863	33.5
1864	33.5
1865	33.5
1866	33.5
1867	33.5
1868	33.5
1869	33.5
1870	33.5
1871	33.53
1872	33.56
1873	33.58
1874	33.61
1875	33.64
1876	33.67
1877	33.69
1878	33.72
1879	33.75
1880	33.78
1881	33.81
1882	33.83
1883	33.86
1884	33.89
1885	33.92
1886	33.94
1887	33.97
1888	34
1889	34.03
1890	34.06
1891	34.08
1892	34.11
1893	34.14
1894	34.17
1895	34.19
1896	34.22
1897	34.25
1898	34.28
1899	34.31
1900	34.33
1901	34.36
1902	34.39
1903	34.42
1904	34.44
1905	34.47
1906	34.5
1907	34.53
1908	34.56
1909	34.58
1910	34.61
1911	34.64
1912	34.67
1913	34.69
1914	34.72
1915	34.75
1916	34.78
1917	34.81
1918	11.51
1919	34.86
1920	34.89
1921	34.92
1922	34.94
1923	34.97
1924	35
1925	35.03
1926	35.06
1927	35.08
1928	35.11
1929	35.14
1930	35.17
1931	35.72
1932	36.27
1933	36.84
1934	37.39
1935	37.95
1936	38.51
1937	39.08
1938	39.64
1939	40.2
1940	40.76
1941	41.33
1942	41.89
1943	42.45
1944	43.02
1945	43.59
1946	44.16
1947	44.72
1948	45.29
1949	45.86
1950	46.44
1951	46.89
1952	47.73
1953	48.53
1954	49.27
1955	49.95
1956	50.59
1957	51.18
1958	51.73
1959	52.23
1960	52.71
1961	53.17
1962	53.62
1963	54.06
1964	54.51
1965	54.98
1966	55.44
1967	55.89
1968	56.33
1969	56.78
1970	57.21
1971	57.6
1972	57.9
1973	58.2
1974	58.51
1975	58.75
1976	58.96
1977	59.13
1978	59.33
1979	59.58
1980	59.86
1981	60.14
1982	60.42
1983	60.66
1984	61.32
1985	61.92
1986	62.26
1987	62.91
1988	63.6
1989	64.09
1990	64.39
1991	64.72
1992	64.54
1993	64.99
1994	64.6
1995	64.25
1996	62.91
1997	60.95
1998	59.4
1999	57.59
2000	55.43
2001	54.33
2002	53.14
2003	52.12
2004	51.44
2005	51.08
2006	51
2007	51.44
2008	52.15
2009	53.07
2010	54.27
2011	55.75
2012	57.5
2013	59.24
2014	60.63
2015	61.77
2016	62.37
2017	63
2018	63.5