Year	Years
1800	32.7
1801	32.7
1802	32.7
1803	32.7
1804	32.7
1805	32.7
1806	32.7
1807	32.7
1808	32.7
1809	32.7
1810	32.7
1811	32.7
1812	32.7
1813	32.7
1814	32.7
1815	32.7
1816	32.7
1817	32.7
1818	32.7
1819	32.7
1820	32.7
1821	32.7
1822	32.7
1823	32.7
1824	32.7
1825	32.7
1826	32.7
1827	32.7
1828	32.7
1829	32.7
1830	32.7
1831	32.7
1832	32.7
1833	32.7
1834	32.7
1835	32.7
1836	32.7
1837	32.7
1838	32.7
1839	32.7
1840	32.7
1841	32.7
1842	32.7
1843	32.7
1844	32.7
1845	32.7
1846	32.7
1847	32.7
1848	32.7
1849	32.7
1850	32.7
1851	32.7
1852	32.7
1853	32.7
1854	32.7
1855	32.7
1856	32.7
1857	32.7
1858	32.7
1859	32.7
1860	32.7
1861	32.7
1862	32.7
1863	32.7
1864	32.7
1865	32.7
1866	32.7
1867	32.7
1868	32.7
1869	32.7
1870	32.7
1871	32.67
1872	32.64
1873	32.62
1874	32.59
1875	32.56
1876	32.53
1877	32.5
1878	32.48
1879	32.45
1880	32.42
1881	32.39
1882	32.37
1883	32.34
1884	32.31
1885	32.28
1886	32.25
1887	32.23
1888	32.2
1889	32.17
1890	32.14
1891	32.11
1892	32.09
1893	32.06
1894	32.03
1895	32
1896	31.97
1897	31.95
1898	31.92
1899	31.89
1900	31.86
1901	31.83
1902	31.81
1903	31.78
1904	31.75
1905	31.72
1906	31.7
1907	31.67
1908	31.64
1909	31.61
1910	31.58
1911	31.56
1912	31.53
1913	31.5
1914	31.47
1915	31.44
1916	31.42
1917	31.39
1918	12.13
1919	31.33
1920	31.3
1921	31.28
1922	31.25
1923	31.22
1924	31.19
1925	31.16
1926	31.14
1927	31.11
1928	31.08
1929	31.05
1930	31.03
1931	31
1932	30.97
1933	30.94
1934	30.91
1935	30.89
1936	30.86
1937	30.83
1938	30.8
1939	30.77
1940	30.75
1941	30.72
1942	30.69
1943	30.66
1944	30.63
1945	30.61
1946	32.25
1947	33.89
1948	35.53
1949	37.15
1950	38.79
1951	39.11
1952	39.79
1953	40.46
1954	41.12
1955	41.78
1956	42.43
1957	43.07
1958	43.69
1959	44.3
1960	44.88
1961	45.43
1962	45.95
1963	46.44
1964	46.89
1965	47.3
1966	47.67
1967	48
1968	48.3
1969	48.58
1970	48.83
1971	49.21
1972	49.59
1973	50.02
1974	50.51
1975	50.98
1976	51.43
1977	51.76
1978	52.08
1979	52.52
1980	53.05
1981	53.55
1982	54.03
1983	54.44
1984	54.79
1985	54.98
1986	54.96
1987	54.82
1988	54.63
1989	54.41
1990	54.08
1991	54.16
1992	54.19
1993	53.35
1994	53.12
1995	52.68
1996	52.3
1997	46.71
1998	50.21
1999	51.97
2000	52.78
2001	53.7
2002	54.44
2003	54.96
2004	55.81
2005	56.6
2006	57.47
2007	57.97
2008	58.7
2009	59.58
2010	60.43
2011	61.12
2012	61.53
2013	61.96
2014	62.38
2015	62.64
2016	62.99
2017	63.44
2018	63.86