Year	Years
1800	35.6
1801	35.6
1802	35.6
1803	35.6
1804	35.6
1805	35.6
1806	35.6
1807	35.6
1808	35.6
1809	35.6
1810	35.6
1811	35.6
1812	35.6
1813	35.6
1814	35.6
1815	35.6
1816	35.6
1817	35.6
1818	35.6
1819	35.6
1820	35.6
1821	35.6
1822	35.6
1823	35.6
1824	35.6
1825	35.6
1826	35.6
1827	35.6
1828	35.6
1829	35.6
1830	35.6
1831	35.6
1832	35.6
1833	35.6
1834	35.6
1835	35.6
1836	35.6
1837	35.6
1838	35.6
1839	35.6
1840	35.6
1841	35.6
1842	35.6
1843	35.6
1844	35.6
1845	35.6
1846	35.6
1847	35.6
1848	35.6
1849	35.6
1850	35.6
1851	35.6
1852	35.6
1853	35.6
1854	35.6
1855	35.6
1856	35.6
1857	35.6
1858	35.6
1859	35.6
1860	35.6
1861	35.6
1862	35.6
1863	35.6
1864	35.6
1865	35.6
1866	35.6
1867	35.6
1868	35.6
1869	35.6
1870	35.6
1871	35.6
1872	35.6
1873	35.6
1874	35.6
1875	35.61
1876	35.61
1877	35.61
1878	35.61
1879	35.61
1880	35.61
1881	35.61
1882	35.61
1883	35.62
1884	35.62
1885	35.62
1886	35.62
1887	35.62
1888	35.62
1889	35.62
1890	35.62
1891	35.63
1892	35.63
1893	35.63
1894	35.63
1895	35.63
1896	35.63
1897	35.63
1898	35.63
1899	35.63
1900	35.64
1901	35.64
1902	35.64
1903	35.64
1904	35.64
1905	35.64
1906	35.64
1907	35.64
1908	35.65
1909	35.65
1910	35.65
1911	35.65
1912	35.65
1913	35.65
1914	35.65
1915	35.65
1916	35.65
1917	35.66
1918	20.42
1919	35.66
1920	35.66
1921	35.66
1922	35.66
1923	35.66
1924	35.66
1925	35.67
1926	36.73
1927	37.78
1928	38.85
1929	39.9
1930	40.96
1931	42.02
1932	43.08
1933	44.13
1934	45.2
1935	46.25
1936	47.31
1937	48.37
1938	49.43
1939	50.49
1940	51.55
1941	48.06
1942	49.99
1943	51.18
1944	52.55
1945	53.95
1946	53.83
1947	56.17
1948	56.91
1949	55.53
1950	58.69
1951	58.88
1952	59.98
1953	61.29
1954	62.44
1955	61.61
1956	61.42
1957	61.69
1958	64
1959	63.18
1960	64.44
1961	63.06
1962	64.59
1963	65.22
1964	65.45
1965	66.4
1966	65.91
1967	66.82
1968	67.13
1969	66.74
1970	67.4
1971	67.67
1972	68.37
1973	68.73
1974	69.11
1975	69.74
1976	70.08
1977	70.31
1978	70.79
1979	71.25
1980	71.62
1981	71.97
1982	72.4
1983	72.63
1984	72.9
1985	73.19
1986	73.49
1987	73.77
1988	73.97
1989	74.19
1990	74.31
1991	74.48
1992	74.77
1993	74.95
1994	75.22
1995	75.31
1996	75.45
1997	75.79
1998	76.05
1999	76.28
2000	76.68
2001	77.03
2002	77.32
2003	77.61
2004	78.05
2005	78.33
2006	78.75
2007	79.01
2008	79.29
2009	79.56
2010	79.84
2011	80.13
2012	80.3
2013	80.52
2014	80.74
2015	80.81
2016	80.9
2017	81.1
2018	81.3