Year	Years
1800	34.9
1801	34.9
1802	34.9
1803	34.9
1804	34.9
1805	34.9
1806	34.9
1807	34.9
1808	34.9
1809	34.9
1810	34.9
1811	34.9
1812	34.9
1813	34.9
1814	34.9
1815	34.9
1816	34.9
1817	34.9
1818	34.9
1819	34.9
1820	34.9
1821	34.9
1822	34.9
1823	34.9
1824	34.9
1825	34.9
1826	34.9
1827	34.9
1828	34.9
1829	34.9
1830	34.9
1831	34.9
1832	34.9
1833	34.9
1834	34.9
1835	34.9
1836	34.9
1837	34.9
1838	34.9
1839	34.9
1840	34.9
1841	34.9
1842	34.9
1843	34.9
1844	34.9
1845	34.9
1846	34.9
1847	34.9
1848	34.9
1849	34.9
1850	34.9
1851	34.9
1852	34.9
1853	34.9
1854	34.9
1855	34.9
1856	34.9
1857	34.9
1858	34.9
1859	34.9
1860	34.9
1861	34.9
1862	34.9
1863	34.9
1864	34.9
1865	34.9
1866	34.9
1867	34.9
1868	34.9
1869	34.9
1870	34.9
1871	34.89
1872	34.89
1873	34.88
1874	34.88
1875	34.87
1876	34.87
1877	34.86
1878	34.86
1879	34.85
1880	34.85
1881	34.84
1882	34.83
1883	34.83
1884	34.82
1885	34.82
1886	34.81
1887	34.81
1888	34.8
1889	34.8
1890	34.79
1891	34.78
1892	34.78
1893	34.77
1894	34.77
1895	34.76
1896	34.76
1897	34.75
1898	34.75
1899	34.74
1900	34.74
1901	34.73
1902	34.72
1903	34.72
1904	34.71
1905	34.71
1906	34.7
1907	34.7
1908	34.69
1909	34.69
1910	34.68
1911	34.67
1912	34.67
1913	34.66
1914	34.66
1915	34.65
1916	34.65
1917	34.64
1918	22.19
1919	34.63
1920	34.63
1921	35.52
1922	36.41
1923	37.31
1924	38.2
1925	39.1
1926	39.98
1927	40.88
1928	41.77
1929	42.67
1930	43.55
1931	44.45
1932	45.34
1933	46.24
1934	47.12
1935	48.01
1936	48.91
1937	49.8
1938	50.68
1939	51.57
1940	52.47
1941	53.35
1942	54.24
1943	55.13
1944	56.02
1945	56.9
1946	57.79
1947	58.68
1948	59.57
1949	60.45
1950	61.34
1951	61.58
1952	62.09
1953	62.6
1954	63.13
1955	63.68
1956	64.23
1957	64.79
1958	65.36
1959	65.93
1960	66.49
1961	67.04
1962	67.56
1963	68.04
1964	68.49
1965	68.91
1966	69.31
1967	69.69
1968	70.05
1969	70.41
1970	70.76
1971	71.04
1972	71.38
1973	71.81
1974	72.15
1975	72.59
1976	72.96
1977	73.35
1978	73.77
1979	74
1980	74.53
1981	75.05
1982	75.47
1983	75.89
1984	76.36
1985	76.82
1986	77.16
1987	77.33
1988	77.57
1989	77.82
1990	78.02
1991	78.27
1992	78.47
1993	78.75
1994	79.06
1995	79.31
1996	79.53
1997	79.68
1998	79.91
1999	80.1
2000	80.39
2001	80.72
2002	80.95
2003	81.11
2004	81.33
2005	81.56
2006	81.81
2007	81.99
2008	82.19
2009	82.42
2010	82.61
2011	82.78
2012	82.94
2013	83.22
2014	83.29
2015	83.36
2016	83.45
2017	83.6
2018	83.75