Year	Years
1800	28.82
1801	28.82
1802	28.82
1803	28.82
1804	28.82
1805	28.82
1806	28.82
1807	28.82
1808	28.82
1809	28.82
1810	28.82
1811	28.82
1812	28.82
1813	28.82
1814	28.82
1815	28.82
1816	28.82
1817	28.82
1818	28.82
1819	28.82
1820	28.82
1821	28.82
1822	28.82
1823	28.82
1824	28.82
1825	28.82
1826	28.82
1827	28.82
1828	28.82
1829	28.82
1830	28.82
1831	28.82
1832	28.82
1833	28.82
1834	28.82
1835	28.82
1836	28.82
1837	28.82
1838	28.82
1839	28.82
1840	28.82
1841	28.82
1842	28.82
1843	28.82
1844	28.82
1845	28.82
1846	28.82
1847	28.82
1848	28.82
1849	20
1850	15
1851	22
1852	28.82
1853	28.82
1854	28.82
1855	28.82
1856	28.82
1857	28.82
1858	28.82
1859	28.82
1860	28.82
1861	28.82
1862	28.82
1863	28.82
1864	28.82
1865	28.82
1866	28.82
1867	21
1868	11
1869	15
1870	22
1871	28.86
1872	28.9
1873	28.94
1874	28.98
1875	29.02
1876	29.06
1877	29.11
1878	29.15
1879	29.19
1880	29.23
1881	29.27
1882	29.31
1883	29.35
1884	29.39
1885	29.43
1886	29.47
1887	29.51
1888	29.55
1889	29.59
1890	29.63
1891	29.68
1892	29.72
1893	29.76
1894	29.8
1895	29.84
1896	29.88
1897	29.92
1898	29.96
1899	30
1900	30.08
1901	30.17
1902	30.25
1903	31.25
1904	25.28
1905	28.02
1906	29.46
1907	29.39
1908	29.34
1909	30.87
1910	32.53
1911	32.28
1912	33.68
1913	31.46
1914	30.97
1915	30.48
1916	30.13
1917	30.17
1918	23.56
1919	30.25
1920	29.44
1921	29.48
1922	29.22
1923	31.84
1924	33.33
1925	34.1
1926	33.42
1927	28.62
1928	32.23
1929	32.46
1930	33.78
1931	31.7
1932	33.06
1933	34.33
1934	33.74
1935	35.6
1936	36.84
1937	34.94
1938	34.31
1939	36.61
1940	37.06
1941	35.31
1942	34.66
1943	29.98
1944	35.45
1945	33.18
1946	35.44
1947	38.81
1948	41.97
1949	44.4
1950	46.85
1951	47.12
1952	47.63
1953	48.13
1954	48.65
1955	49.19
1956	49.74
1957	50.29
1958	50.86
1959	51.43
1960	52.01
1961	52.58
1962	53.17
1963	53.76
1964	54.32
1965	54.89
1966	55.43
1967	55.96
1968	56.46
1969	56.97
1970	57.49
1971	57.76
1972	58.16
1973	58.54
1974	59.06
1975	59.5
1976	59.99
1977	60.57
1978	61.17
1979	61.85
1980	62.13
1981	63.37
1982	64.4
1983	65.67
1984	66.86
1985	68.03
1986	68.73
1987	69.43
1988	70.04
1989	70.55
1990	71
1991	71.4
1992	71.73
1993	71.96
1994	72.13
1995	72.31
1996	72.79
1997	72.95
1998	73.12
1999	73.55
2000	73.87
2001	74.13
2002	74.44
2003	74.55
2004	75.06
2005	75.36
2006	75.63
2007	75.87
2008	76.12
2009	76.31
2010	76.55
2011	76.71
2012	76.85
2013	76.98
2014	77.1
2015	77.28
2016	77.42
2017	77.64
2018	77.86