Year	Years
1800	23.94
1801	23.94
1802	23.94
1803	23.94
1804	23.94
1805	23.94
1806	23.94
1807	23.94
1808	23.94
1809	23.94
1810	23.94
1811	23.94
1812	23.94
1813	23.94
1814	23.94
1815	23.94
1816	23.94
1817	23.94
1818	23.94
1819	23.94
1820	23.94
1821	23.94
1822	23.94
1823	23.94
1824	23.94
1825	23.94
1826	23.94
1827	23.94
1828	23.94
1829	23.94
1830	23.94
1831	23.94
1832	23.94
1833	23.94
1834	23.94
1835	23.94
1836	23.94
1837	23.94
1838	23.94
1839	23.94
1840	23.94
1841	23.94
1842	23.94
1843	23.94
1844	23.94
1845	23.94
1846	23.94
1847	23.94
1848	23.94
1849	23.94
1850	23.94
1851	23.94
1852	23.94
1853	23.94
1854	23.94
1855	23.94
1856	23.94
1857	23.94
1858	23.94
1859	23.94
1860	23.94
1861	23.94
1862	23.94
1863	23.94
1864	23.42
1865	22.89
1866	22.37
1867	21.85
1868	21.32
1869	21.37
1870	21.41
1871	21.45
1872	21.49
1873	21.53
1874	21.73
1875	21.92
1876	22.12
1877	22.32
1878	22.51
1879	22.71
1880	22.91
1881	23.1
1882	23.3
1883	23.49
1884	23.69
1885	23.89
1886	24.08
1887	24.28
1888	24.47
1889	24.67
1890	24.86
1891	25.06
1892	25.26
1893	25.45
1894	25.65
1895	25.84
1896	26.04
1897	26.23
1898	26.06
1899	25.9
1900	25.72
1901	25.97
1902	26.21
1903	26.46
1904	26.7
1905	26.95
1906	27.19
1907	27.44
1908	27.68
1909	27.92
1910	28.17
1911	31.11
1912	31.52
1913	29.36
1914	28.95
1915	28.54
1916	28.54
1917	25.56
1918	15.63
1919	21.05
1920	16.58
1921	11.91
1922	13.89
1923	29.57
1924	32.05
1925	31.15
1926	34.32
1927	33.66
1928	35.14
1929	33.9
1930	33.23
1931	27.48
1932	19.55
1933	15.59
1934	35.54
1935	37.08
1936	38.73
1937	37.74
1938	39.4
1939	41.77
1940	39.32
1941	28.69
1942	24.73
1943	23.74
1944	31.64
1945	39.05
1946	46.2
1947	38.29
1948	46.26
1949	49.02
1950	51.28
1951	51.5
1952	51.95
1953	52.38
1954	52.83
1955	53.27
1956	53.71
1957	54.15
1958	54.58
1959	55.02
1960	55.46
1961	55.9
1962	56.35
1963	56.79
1964	57.23
1965	57.67
1966	58.08
1967	58.5
1968	58.88
1969	59.25
1970	59.59
1971	60.12
1972	60.62
1973	61.08
1974	61.5
1975	61.88
1976	62.29
1977	62.73
1978	63.16
1979	63.54
1980	63.91
1981	64.18
1982	64.25
1983	64.32
1984	64.49
1985	65.25
1986	66.09
1987	66.32
1988	66.14
1989	65.96
1990	65.98
1991	65.99
1992	65.69
1993	65.01
1994	64.17
1995	64.13
1996	64.72
1997	65.37
1998	65.83
1999	66.2
2000	66.41
2001	66.65
2002	66.6
2003	66.59
2004	66.69
2005	66.63
2006	66.64
2007	66.93
2008	67.39
2009	68.05
2010	68.45
2011	69.1
2012	69.57
2013	70.13
2014	70.66
2015	71.07
2016	71.23
2017	71.34
2018	71.45