Year	Years
1800	32.8
1801	32.8
1802	32.8
1803	32.8
1804	32.8
1805	32.8
1806	32.8
1807	32.8
1808	32.8
1809	32.8
1810	32.8
1811	32.8
1812	32.8
1813	32.8
1814	32.8
1815	32.8
1816	32.8
1817	32.8
1818	32.8
1819	32.8
1820	32.8
1821	32.8
1822	32.8
1823	32.8
1824	32.8
1825	32.8
1826	32.8
1827	32.8
1828	32.8
1829	32.8
1830	32.8
1831	32.8
1832	32.8
1833	32.8
1834	32.8
1835	32.8
1836	32.8
1837	32.8
1838	32.8
1839	32.8
1840	32.8
1841	32.8
1842	32.8
1843	32.8
1844	32.8
1845	32.8
1846	32.8
1847	32.8
1848	32.8
1849	32.8
1850	32.8
1851	32.8
1852	32.8
1853	32.8
1854	32.8
1855	32.8
1856	32.8
1857	32.8
1858	32.8
1859	32.8
1860	32.8
1861	32.8
1862	32.8
1863	32.8
1864	32.8
1865	32.8
1866	32.8
1867	32.8
1868	32.8
1869	32.8
1870	32.8
1871	32.85
1872	32.89
1873	32.94
1874	32.98
1875	33.03
1876	33.07
1877	33.12
1878	33.16
1879	33.21
1880	33.25
1881	33.3
1882	33.35
1883	33.39
1884	33.44
1885	33.48
1886	33.53
1887	33.57
1888	33.62
1889	33.66
1890	33.71
1891	33.76
1892	33.8
1893	33.85
1894	33.89
1895	33.94
1896	33.98
1897	34.03
1898	34.07
1899	34.12
1900	34.16
1901	34.21
1902	34.26
1903	34.3
1904	34.35
1905	34.39
1906	34.44
1907	34.48
1908	34.53
1909	34.57
1910	34.62
1911	34.66
1912	34.71
1913	34.76
1914	34.8
1915	34.85
1916	34.89
1917	34.94
1918	13.53
1919	35.03
1920	35.07
1921	35.12
1922	35.16
1923	35.21
1924	35.26
1925	35.3
1926	35.35
1927	35.39
1928	35.44
1929	35.48
1930	35.53
1931	35.57
1932	35.62
1933	35.67
1934	35.71
1935	35.76
1936	35.8
1937	35.85
1938	35.89
1939	35.94
1940	35.98
1941	36.03
1942	36.07
1943	36.12
1944	36.17
1945	36.21
1946	38.07
1947	39.94
1948	41.81
1949	43.69
1950	45.57
1951	45.94
1952	46.62
1953	47.32
1954	48.04
1955	48.78
1956	49.53
1957	50.27
1958	51.02
1959	51.74
1960	52.42
1961	53.03
1962	53.56
1963	54
1964	54.35
1965	54.62
1966	54.84
1967	55.05
1968	55.26
1969	55.52
1970	55.83
1971	55.92
1972	56.12
1973	56.48
1974	56.8
1975	57.04
1976	57.31
1977	57.67
1978	58.15
1979	58.45
1980	58.7
1981	58.94
1982	59.15
1983	59.33
1984	59.52
1985	59.73
1986	59.95
1987	60.08
1988	60.27
1989	60.41
1990	60.4
1991	60.4
1992	60.05
1993	59.58
1994	58.59
1995	57.72
1996	56.53
1997	54.96
1998	52.78
1999	50.9
2000	48.8
2001	47.49
2002	46.05
2003	44.7
2004	43.8
2005	43.25
2006	43.23
2007	43.65
2008	44.32
2009	45.39
2010	46.5
2011	47.55
2012	47.87
2013	48.11
2014	48.62
2015	49.57
2016	50.4
2017	50.77
2018	51.12