Year	Years
1800	36.6
1801	36.6
1802	36.6
1803	36.6
1804	36.6
1805	36.6
1806	36.6
1807	36.6
1808	36.6
1809	36.6
1810	36.6
1811	36.6
1812	36.6
1813	36.6
1814	36.6
1815	36.6
1816	36.6
1817	36.6
1818	36.6
1819	36.6
1820	36.6
1821	36.6
1822	36.6
1823	36.6
1824	36.6
1825	36.6
1826	36.6
1827	36.6
1828	36.6
1829	36.6
1830	36.6
1831	36.6
1832	36.6
1833	36.6
1834	36.6
1835	36.6
1836	36.6
1837	36.6
1838	36.6
1839	36.6
1840	36.6
1841	36.6
1842	36.6
1843	36.6
1844	36.6
1845	36.6
1846	36.6
1847	36.6
1848	36.6
1849	36.6
1850	36.6
1851	36.6
1852	36.6
1853	36.6
1854	36.6
1855	36.6
1856	36.6
1857	36.6
1858	36.6
1859	36.6
1860	36.6
1861	36.6
1862	36.6
1863	36.6
1864	36.6
1865	36.6
1866	36.6
1867	36.6
1868	36.6
1869	36.6
1870	36.6
1871	36.61
1872	36.63
1873	36.64
1874	36.65
1875	36.67
1876	36.68
1877	36.69
1878	36.81
1879	36.92
1880	37.03
1881	37.15
1882	37.26
1883	37.39
1884	37.53
1885	37.66
1886	37.8
1887	37.93
1888	38.1
1889	38.28
1890	38.45
1891	38.63
1892	38.8
1893	39
1894	39.19
1895	39.39
1896	39.59
1897	39.78
1898	40
1899	40.21
1900	40.43
1901	40.65
1902	40.86
1903	41.04
1904	41.22
1905	41.39
1906	41.57
1907	41.75
1908	42.03
1909	42.31
1910	42.6
1911	42.88
1912	43.17
1913	43.45
1914	43.74
1915	44.02
1916	44.31
1917	44.6
1918	24.48
1919	45.17
1920	45.45
1921	45.75
1922	46.04
1923	46.67
1924	47.3
1925	47.93
1926	48.55
1927	49.18
1928	47.13
1929	51.03
1930	51.23
1931	51.42
1932	51.62
1933	52.11
1934	52.6
1935	53.09
1936	53.58
1937	54.07
1938	54.61
1939	55.15
1940	55.7
1941	41.22
1942	30.26
1943	40.02
1944	46.19
1945	59.56
1946	57.63
1947	54.98
1948	49.55
1949	56.86
1950	67.29
1951	67.38
1952	67.55
1953	67.77
1954	68.03
1955	68.35
1956	68.71
1957	69.11
1958	69.55
1959	69.99
1960	70.44
1961	70.86
1962	71.23
1963	71.56
1964	71.83
1965	72.07
1966	72.3
1967	72.55
1968	72.82
1969	73.15
1970	73.49
1971	73.82
1972	73.94
1973	74.23
1974	74.43
1975	74.58
1976	74.85
1977	75.44
1978	76.41
1979	76.88
1980	77.11
1981	77.29
1982	77.29
1983	77.09
1984	76.5
1985	76.22
1986	76.34
1987	76.45
1988	76.67
1989	76.86
1990	77.01
1991	77.13
1992	77.25
1993	77.46
1994	77.66
1995	77.81
1996	77.96
1997	78.12
1998	78.25
1999	78.39
2000	78.64
2001	78.91
2002	79.1
2003	79.29
2004	79.46
2005	79.63
2006	79.88
2007	79.95
2008	80.18
2009	80.29
2010	80.41
2011	80.49
2012	80.59
2013	80.82
2014	80.93
2015	80.96
2016	80.96
2017	81.15
2018	81.34