Year	Years
1800	28.95
1801	28.95
1802	28.95
1803	28.95
1804	28.95
1805	28.95
1806	28.95
1807	28.95
1808	28.95
1809	28.95
1810	28.95
1811	28.95
1812	28.95
1813	28.95
1814	28.95
1815	28.95
1816	28.95
1817	28.95
1818	28.95
1819	28.95
1820	28.95
1821	28.95
1822	28.95
1823	28.95
1824	28.95
1825	28.95
1826	28.95
1827	28.95
1828	28.95
1829	28.95
1830	28.95
1831	28.95
1832	28.95
1833	28.95
1834	28.95
1835	28.95
1836	28.95
1837	28.95
1838	28.95
1839	28.95
1840	28.95
1841	28.95
1842	28.95
1843	28.95
1844	28.95
1845	28.95
1846	28.95
1847	28.95
1848	28.95
1849	28.95
1850	28.95
1851	28.95
1852	28.95
1853	28.95
1854	28.95
1855	28.95
1856	28.95
1857	28.95
1858	28.95
1859	28.95
1860	28.95
1861	28.95
1862	28.95
1863	28.95
1864	28.95
1865	28.95
1866	28.95
1867	28.95
1868	28.95
1869	28.95
1870	28.95
1871	28.98
1872	29.01
1873	29.05
1874	29.08
1875	29.11
1876	29.14
1877	29.17
1878	29.21
1879	29.24
1880	29.27
1881	29.3
1882	29.33
1883	29.36
1884	29.4
1885	29.43
1886	29.46
1887	29.49
1888	29.52
1889	29.56
1890	29.59
1891	29.62
1892	29.65
1893	29.68
1894	29.72
1895	29.75
1896	29.78
1897	29.81
1898	29.84
1899	29.88
1900	29.91
1901	29.94
1902	29.97
1903	30
1904	30.03
1905	30.07
1906	30.1
1907	30.13
1908	30.16
1909	30.19
1910	30.23
1911	30.26
1912	30.29
1913	30.32
1914	30.35
1915	30.39
1916	30.42
1917	30.45
1918	9.9
1919	30.51
1920	30.55
1921	30.58
1922	30.61
1923	30.64
1924	30.67
1925	30.7
1926	30.74
1927	30.77
1928	30.8
1929	30.83
1930	30.86
1931	30.9
1932	30.93
1933	30.96
1934	30.99
1935	31.02
1936	31.06
1937	31.09
1938	31.12
1939	31.15
1940	31.18
1941	31.22
1942	22.67
1943	20.53
1944	17.3
1945	16.24
1946	21.68
1947	28.21
1948	31.44
1949	31.47
1950	31.5
1951	31.81
1952	32.39
1953	32.97
1954	33.56
1955	34.14
1956	34.73
1957	35.31
1958	35.89
1959	36.48
1960	37.06
1961	37.65
1962	38.24
1963	38.83
1964	39.42
1965	40.06
1966	40.79
1967	41.61
1968	42.47
1969	43.29
1970	43.88
1971	44.56
1972	45.21
1973	45.93
1974	46.66
1975	42.98
1976	44.75
1977	44.95
1978	44.43
1979	43.98
1980	46.96
1981	49.19
1982	50.73
1983	51.8
1984	53.29
1985	54.45
1986	55.39
1987	56.42
1988	56.86
1989	57.14
1990	58
1991	58.25
1992	59.16
1993	59.69
1994	60.58
1995	60.89
1996	62.45
1997	61.55
1998	61.79
1999	55.72
2000	63.69
2001	64.31
2002	64.8
2003	65.23
2004	66.16
2005	67.18
2006	68.32
2007	69.21
2008	70.04
2009	70.61
2010	71.1
2011	71.6
2012	72.05
2013	72.33
2014	72.46
2015	72.56
2016	72.69
2017	73.02
2018	73.34