Year	Years
1800	25.5
1801	25.5
1802	25.5
1803	25.5
1804	25.5
1805	25.5
1806	25.5
1807	25.5
1808	25.5
1809	25.5
1810	25.5
1811	25.5
1812	25.5
1813	25.5
1814	25.5
1815	25.5
1816	25.5
1817	25.5
1818	25.5
1819	25.5
1820	25.5
1821	25.5
1822	25.5
1823	25.5
1824	25.5
1825	25.5
1826	25.5
1827	25.5
1828	25.5
1829	25.5
1830	25.5
1831	25.5
1832	25.5
1833	25.5
1834	25.5
1835	25.5
1836	25.5
1837	25.5
1838	25.5
1839	25.5
1840	25.5
1841	25.5
1842	25.5
1843	25.5
1844	25.5
1845	25.5
1846	25.5
1847	25.5
1848	25.5
1849	25.5
1850	25.5
1851	25.5
1852	25.5
1853	25.5
1854	25.5
1855	25.5
1856	25.5
1857	25.5
1858	25.5
1859	25.5
1860	25.5
1861	25.5
1862	25.5
1863	25.5
1864	25.5
1865	25.5
1866	25.5
1867	25.5
1868	25.5
1869	25.5
1870	25.5
1871	25.53
1872	25.56
1873	25.58
1874	25.61
1875	25.64
1876	25.67
1877	25.7
1878	25.72
1879	25.75
1880	25.78
1881	25.81
1882	25.83
1883	25.86
1884	25.89
1885	25.92
1886	25.95
1887	25.97
1888	26
1889	26.03
1890	26.06
1891	26.09
1892	26.11
1893	26.14
1894	26.17
1895	26.2
1896	26.23
1897	26.25
1898	26.28
1899	26.31
1900	26.34
1901	26.36
1902	26.39
1903	26.42
1904	26.45
1905	26.48
1906	26.5
1907	26.53
1908	26.56
1909	26.59
1910	26.62
1911	26.64
1912	26.67
1913	26.7
1914	26.73
1915	26.76
1916	26.78
1917	26.81
1918	6.33
1919	26.87
1920	26.9
1921	26.92
1922	26.95
1923	26.64
1924	26.34
1925	26.03
1926	25.73
1927	25.41
1928	25.7
1929	25.99
1930	26.28
1931	26.56
1932	26.86
1933	27.14
1934	27.44
1935	27.72
1936	28.02
1937	28.3
1938	28.67
1939	29.03
1940	29.38
1941	29.74
1942	30.1
1943	30.46
1944	30.83
1945	31.19
1946	33.98
1947	36.79
1948	39.59
1949	42.4
1950	45.23
1951	45.44
1952	45.84
1953	46.32
1954	46.83
1955	47.4
1956	48.02
1957	48.69
1958	49.41
1959	50.15
1960	50.91
1961	51.68
1962	52.44
1963	53.16
1964	53.86
1965	54.55
1966	55.21
1967	55.87
1968	56.55
1969	57.23
1970	57.93
1971	58.27
1972	58.67
1973	59.06
1974	59.46
1975	59.82
1976	60.18
1977	60.57
1978	60.98
1979	61.34
1980	61.67
1981	61.94
1982	62.15
1983	62.42
1984	62.51
1985	62.61
1986	62.64
1987	62.4
1988	62.42
1989	61.9
1990	61.44
1991	60.74
1992	59.86
1993	58.96
1994	58.05
1995	57.26
1996	56.55
1997	55.85
1998	55.29
1999	55.27
2000	55.21
2001	55.46
2002	55.67
2003	56
2004	56.56
2005	57.43
2006	58.48
2007	59.62
2008	60.65
2009	61.68
2010	62.76
2011	63.76
2012	64.6
2013	65.2
2014	65.78
2015	66.35
2016	66.88
2017	67.13
2018	67.35