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	36.4
1814	36.4
1815	36.4
1816	36.4
1817	36.4
1818	36.4
1819	36.4
1820	36.4
1821	36.4
1822	36.4
1823	36.4
1824	36.4
1825	36.4
1826	36.4
1827	36.4
1828	36.4
1829	36.4
1830	36.4
1831	36.4
1832	36.4
1833	36.4
1834	36.4
1835	36.4
1836	36.4
1837	36.4
1838	36.4
1839	36.4
1840	36.4
1841	36.4
1842	36.4
1843	36.4
1844	36.4
1845	36.4
1846	36.4
1847	36.4
1848	36.4
1849	36.4
1850	36.4
1851	36.4
1852	36.4
1853	36.4
1854	36.4
1855	36.4
1856	36.4
1857	36.4
1858	36.4
1859	36.4
1860	36.4
1861	36.4
1862	36.4
1863	36.4
1864	36.4
1865	36.4
1866	36.4
1867	36.4
1868	36.4
1869	36.4
1870	36.4
1871	36.4
1872	36.4
1873	36.4
1874	36.4
1875	36.4
1876	36.4
1877	36.4
1878	36.4
1879	36.41
1880	36.41
1881	36.41
1882	36.41
1883	36.41
1884	36.41
1885	36.41
1886	36.41
1887	36.41
1888	36.41
1889	36.41
1890	36.41
1891	36.41
1892	36.41
1893	36.41
1894	36.41
1895	36.41
1896	36.72
1897	37.02
1898	37.32
1899	37.62
1900	37.92
1901	38.22
1902	38.52
1903	38.82
1904	39.12
1905	39.42
1906	39.72
1907	40.02
1908	40.32
1909	40.63
1910	40.93
1911	41.23
1912	41.53
1913	41.83
1914	42.13
1915	42.43
1916	42.73
1917	43.03
1918	31.88
1919	43.63
1920	43.94
1921	44.24
1922	44.87
1923	45.51
1924	46.14
1925	46.77
1926	47.41
1927	48.04
1928	48.68
1929	49.32
1930	49.95
1931	50.42
1932	50.89
1933	51.36
1934	51.84
1935	52.31
1936	52.79
1937	53.26
1938	53.85
1939	54.16
1940	54.06
1941	53.86
1942	52.06
1943	47.56
1944	42.55
1945	40.55
1946	54.07
1947	58.07
1948	59.07
1949	60.38
1950	60.97
1951	61.39
1952	64.44
1953	65.75
1954	66.8
1955	67.93
1956	68.46
1957	67.54
1958	69.45
1959	69.13
1960	70.45
1961	70.89
1962	70.43
1963	70.81
1964	71.2
1965	70.41
1966	70.55
1967	71.09
1968	70.61
1969	69.92
1970	69.85
1971	69.94
1972	70.13
1973	70.09
1974	70.29
1975	70.4
1976	70.49
1977	70.6
1978	70.55
1979	70.69
1980	70.57
1981	70.68
1982	70.83
1983	70.7
1984	70.81
1985	70.83
1986	70.99
1987	71.04
1988	71.15
1989	71.07
1990	71.07
1991	71.16
1992	71.5
1993	71.91
1994	72.25
1995	72.38
1996	72.72
1997	72.75
1998	72.77
1999	73
2000	73.26
2001	73.55
2002	73.77
2003	73.9
2004	74.13
2005	74.2
2006	74.4
2007	74.54
2008	74.86
2009	75.11
2010	75.52
2011	75.86
2012	76.17
2013	76.47
2014	76.74
2015	76.84
2016	76.91
2017	77.04
2018	77.16