Year	Years
1800	28.75
1801	28.75
1802	28.75
1803	28.75
1804	28.75
1805	28.75
1806	28.75
1807	28.75
1808	28.75
1809	28.75
1810	28.75
1811	28.75
1812	28.75
1813	28.75
1814	28.75
1815	28.75
1816	28.75
1817	28.75
1818	28.75
1819	28.75
1820	28.75
1821	28.75
1822	28.75
1823	28.75
1824	28.75
1825	28.75
1826	28.75
1827	28.75
1828	28.75
1829	28.75
1830	28.75
1831	28.75
1832	28.75
1833	28.75
1834	28.75
1835	28.75
1836	28.75
1837	28.75
1838	28.75
1839	28.75
1840	28.75
1841	28.75
1842	28.75
1843	28.75
1844	28.75
1845	28.75
1846	28.75
1847	28.75
1848	28.75
1849	28.75
1850	28.75
1851	28.75
1852	28.75
1853	28.75
1854	28.75
1855	28.75
1856	28.75
1857	28.75
1858	28.75
1859	28.75
1860	28.75
1861	28.75
1862	28.75
1863	28.75
1864	28.75
1865	28.75
1866	28.75
1867	28.75
1868	28.75
1869	28.75
1870	28.75
1871	28.79
1872	28.82
1873	28.86
1874	28.89
1875	28.93
1876	28.96
1877	29
1878	29.03
1879	29.07
1880	29.1
1881	29.14
1882	29.17
1883	29.21
1884	29.24
1885	29.28
1886	29.31
1887	29.35
1888	29.38
1889	29.42
1890	29.45
1891	29.49
1892	29.52
1893	29.56
1894	29.59
1895	29.63
1896	29.66
1897	29.7
1898	29.73
1899	29.77
1900	29.8
1901	29.84
1902	29.87
1903	29.91
1904	29.94
1905	29.98
1906	30.01
1907	30.05
1908	30.08
1909	30.12
1910	30.15
1911	30.19
1912	30.22
1913	30.26
1914	30.29
1915	30.33
1916	30.36
1917	30.4
1918	5.99
1919	30.47
1920	30.5
1921	30.54
1922	30.57
1923	30.61
1924	30.64
1925	30.68
1926	30.71
1927	30.75
1928	30.78
1929	30.82
1930	30.85
1931	30.89
1932	30.92
1933	30.96
1934	30.99
1935	31.03
1936	31.06
1937	31.1
1938	31.13
1939	31.17
1940	31.2
1941	31.24
1942	31.27
1943	31.31
1944	31.34
1945	31.38
1946	33.4
1947	35.44
1948	37.47
1949	39.52
1950	41.56
1951	41.78
1952	42.19
1953	42.61
1954	43.07
1955	43.52
1956	44.01
1957	44.51
1958	45.03
1959	45.57
1960	46.1
1961	46.64
1962	47.18
1963	47.72
1964	48.26
1965	48.8
1966	49.34
1967	49.91
1968	50.49
1969	51.1
1970	51.71
1971	52.03
1972	52.47
1973	52.84
1974	53.22
1975	53.64
1976	53.95
1977	54.32
1978	54.79
1979	55.24
1980	55.6
1981	56
1982	56.48
1983	56.93
1984	57.23
1985	57.82
1986	57.92
1987	58.4
1988	58.55
1989	58.55
1990	58.45
1991	58.16
1992	57.86
1993	57.35
1994	56.97
1995	56.49
1996	56.06
1997	55.51
1998	55
1999	54.78
2000	54.46
2001	54.43
2002	54.45
2003	54.52
2004	54.64
2005	54.87
2006	55.28
2007	55.61
2008	56.18
2009	56.77
2010	57.25
2011	57.68
2012	58.26
2013	58.75
2014	59.16
2015	59.66
2016	60.18
2017	60.7
2018	61.22