Year	Years
1800	36.4
1801	36.4
1802	36.4
1803	36.4
1804	36.4
1805	36.4
1806	36.4
1807	36.4
1808	36.4
1809	36.4
1810	36.4
1811	36.4
1812	36.4
1813	36.41
1814	36.41
1815	36.41
1816	36.41
1817	36.41
1818	36.41
1819	36.41
1820	36.41
1821	36.41
1822	36.41
1823	36.41
1824	36.41
1825	36.41
1826	36.41
1827	36.41
1828	36.41
1829	36.41
1830	36.41
1831	36.41
1832	36.41
1833	36.41
1834	36.41
1835	36.41
1836	36.41
1837	36.41
1838	36.42
1839	36.42
1840	36.42
1841	36.42
1842	36.42
1843	36.42
1844	36.42
1845	36.42
1846	36.42
1847	36.42
1848	36.42
1849	36.42
1850	36.42
1851	36.42
1852	36.42
1853	36.42
1854	36.42
1855	36.42
1856	36.42
1857	36.42
1858	36.42
1859	36.42
1860	36.42
1861	36.42
1862	36.42
1863	36.43
1864	36.43
1865	36.43
1866	36.46
1867	36.49
1868	36.53
1869	36.56
1870	36.59
1871	36.63
1872	36.68
1873	36.72
1874	36.76
1875	36.81
1876	36.86
1877	36.9
1878	36.95
1879	37
1880	37.05
1881	37.1
1882	37.16
1883	37.22
1884	37.29
1885	37.35
1886	37.42
1887	37.49
1888	37.56
1889	37.63
1890	37.7
1891	37.78
1892	37.86
1893	37.96
1894	38.04
1895	38.13
1896	38.23
1897	38.33
1898	38.43
1899	38.53
1900	38.63
1901	38.76
1902	38.89
1903	39.01
1904	39.14
1905	39.26
1906	39.41
1907	39.56
1908	39.71
1909	39.87
1910	40.02
1911	40.21
1912	40.39
1913	40.58
1914	40.76
1915	40.95
1916	41.19
1917	41.42
1918	32.75
1919	41.88
1920	42.1
1921	42.39
1922	42.68
1923	43.29
1924	43.9
1925	44.51
1926	45.12
1927	45.74
1928	46.06
1929	46.39
1930	46.71
1931	47.03
1932	47.36
1933	47.69
1934	48.01
1935	48.33
1936	48.71
1937	49.1
1938	49.1
1939	49.1
1940	49.1
1941	48.85
1942	48.6
1943	46.1
1944	40.09
1945	30.61
1946	46.6
1947	51.87
1948	57.02
1949	57.89
1950	59.44
1951	61.13
1952	63.18
1953	63.52
1954	64.77
1955	65.93
1956	65.79
1957	65.67
1958	67.29
1959	67.69
1960	67.98
1961	68.63
1962	68.91
1963	70
1964	70.47
1965	70.53
1966	71.34
1967	71.63
1968	71.96
1969	72.19
1970	72.28
1971	72.73
1972	73.13
1973	73.44
1974	73.84
1975	74.31
1976	74.76
1977	75.21
1978	75.59
1979	75.92
1980	76.16
1981	76.48
1982	76.83
1983	77.07
1984	77.37
1985	77.68
1986	78.01
1987	78.31
1988	78.48
1989	78.71
1990	78.86
1991	79.05
1992	79.2
1993	79.38
1994	79.62
1995	79.67
1996	80.08
1997	80.3
1998	80.47
1999	80.64
2000	80.95
2001	81.23
2002	81.48
2003	81.67
2004	81.85
2005	81.97
2006	82.17
2007	82.34
2008	82.5
2009	82.71
2010	82.85
2011	82.62
2012	83.17
2013	83.38
2014	83.63
2015	83.77
2016	83.89
2017	84.03
2018	84.17