Year	Years
1800	25.3
1801	25.3
1802	25.3
1803	25.3
1804	25.3
1805	25.3
1806	25.3
1807	25.3
1808	25.3
1809	25.3
1810	25.3
1811	25.3
1812	25.3
1813	25.3
1814	25.3
1815	25.3
1816	25.3
1817	25.3
1818	25.3
1819	25.3
1820	25.3
1821	25.3
1822	25.3
1823	25.3
1824	25.3
1825	25.3
1826	25.3
1827	25.3
1828	25.3
1829	25.3
1830	25.3
1831	25.3
1832	25.3
1833	25.3
1834	25.3
1835	25.3
1836	25.3
1837	25.3
1838	25.3
1839	25.3
1840	25.3
1841	25.3
1842	25.3
1843	25.3
1844	25.3
1845	25.3
1846	25.3
1847	25.3
1848	25.3
1849	25.3
1850	25.3
1851	25.3
1852	25.3
1853	25.3
1854	25.3
1855	25.3
1856	25.3
1857	25.3
1858	25.3
1859	25.3
1860	25.3
1861	25.3
1862	25.3
1863	25.3
1864	25.3
1865	25.3
1866	25.3
1867	25.3
1868	25.3
1869	25.3
1870	25.3
1871	25.31
1872	25.32
1873	25.32
1874	25.33
1875	25.34
1876	25.35
1877	25.35
1878	25.36
1879	25.37
1880	25.38
1881	25.39
1882	25.39
1883	25.4
1884	25.41
1885	25.42
1886	25.43
1887	25.43
1888	25.44
1889	25.45
1890	25.46
1891	25.46
1892	25.47
1893	25.48
1894	25.49
1895	25.5
1896	25.5
1897	25.51
1898	25.52
1899	25.53
1900	25.53
1901	25.54
1902	25.55
1903	25.56
1904	25.57
1905	25.57
1906	25.58
1907	25.59
1908	25.6
1909	25.6
1910	25.61
1911	25.62
1912	25.63
1913	25.64
1914	25.64
1915	25.65
1916	25.66
1917	25.67
1918	9.93
1919	25.68
1920	25.69
1921	25.7
1922	25.71
1923	25.43
1924	25.15
1925	24.88
1926	24.6
1927	24.32
1928	24.58
1929	24.84
1930	25.11
1931	25.37
1932	25.63
1933	25.89
1934	26.16
1935	26.42
1936	26.68
1937	26.95
1938	27.26
1939	27.58
1940	27.89
1941	28.21
1942	28.52
1943	28.84
1944	29.15
1945	29.47
1946	31.56
1947	33.65
1948	35.75
1949	37.85
1950	39.95
1951	40.22
1952	40.75
1953	41.28
1954	41.82
1955	42.36
1956	42.91
1957	43.48
1958	44.05
1959	44.62
1960	45.21
1961	45.82
1962	46.44
1963	47.06
1964	47.68
1965	48.27
1966	48.82
1967	49.29
1968	49.72
1969	50.07
1970	50.34
1971	50.55
1972	50.78
1973	51.05
1974	51.19
1975	51.34
1976	51.49
1977	51.63
1978	51.37
1979	51.38
1980	49.42
1981	49.69
1982	49.89
1983	50.13
1984	50.07
1985	49.95
1986	49.68
1987	50.92
1988	50.63
1989	49.96
1990	49.2
1991	48.41
1992	47.86
1993	47.34
1994	47.02
1995	46.96
1996	47
1997	47.39
1998	47.7
1999	48.24
2000	48.71
2001	49.44
2002	50.17
2003	50.93
2004	51.76
2005	52.81
2006	53.71
2007	54.33
2008	55.11
2009	56.03
2010	56.81
2011	57.67
2012	58.63
2013	59.75
2014	60.75
2015	61.64
2016	62.26
2017	62.56
2018	62.86