Year	Years
1800	29.57
1801	29.57
1802	29.57
1803	29.57
1804	29.57
1805	29.57
1806	29.57
1807	29.57
1808	29.57
1809	29.57
1810	29.57
1811	29.57
1812	29.57
1813	29.57
1814	29.57
1815	29.57
1816	29.57
1817	29.57
1818	29.57
1819	29.57
1820	29.57
1821	29.57
1822	29.57
1823	29.57
1824	29.57
1825	29.57
1826	29.57
1827	29.57
1828	29.57
1829	29.57
1830	29.57
1831	29.57
1832	29.57
1833	29.57
1834	29.57
1835	29.57
1836	29.57
1837	29.57
1838	29.57
1839	29.57
1840	29.57
1841	29.57
1842	29.57
1843	29.57
1844	29.57
1845	29.57
1846	29.57
1847	29.57
1848	18
1849	29.57
1850	29.57
1851	29.57
1852	29.57
1853	29.5
1854	27.5
1855	27.5
1856	29
1857	29.57
1858	29.57
1859	29.57
1860	29.57
1861	29.57
1862	29.57
1863	29.57
1864	29.57
1865	29.57
1866	29.57
1867	29.57
1868	27.85
1869	27.93
1870	31.12
1871	28.1
1872	25.92
1873	29.47
1874	30.46
1875	31.11
1876	30.92
1877	31.29
1878	27.75
1879	30.82
1880	30.18
1881	32.13
1882	26.69
1883	29.02
1884	32.72
1885	30.81
1886	34.22
1887	33.2
1888	33.1
1889	30.99
1890	29.89
1891	26.35
1892	21.23
1893	27.55
1894	28.05
1895	26.9
1896	28.22
1897	30.41
1898	27.87
1899	31.52
1900	30.68
1901	28.98
1902	29.77
1903	31.7
1904	32.08
1905	30.39
1906	31.89
1907	33.56
1908	33.56
1909	32.27
1910	31.31
1911	34.98
1912	35.4
1913	33.23
1914	32.89
1915	31.4
1916	31.39
1917	28.9
1918	22.92
1919	24.91
1920	20.42
1921	23.71
1922	24.61
1923	33.47
1924	35.96
1925	35.06
1926	38.24
1927	37.34
1928	38.73
1929	37.24
1930	36.34
1931	34.84
1932	32.65
1933	17.27
1934	38.02
1935	39.41
1936	40.9
1937	39.7
1938	41.19
1939	43.38
1940	40.99
1941	22.88
1942	17.9
1943	15.91
1944	26.85
1945	33.81
1946	45.84
1947	40.17
1948	51.9
1949	54.68
1950	56.96
1951	57.45
1952	57.85
1953	58.64
1954	60.62
1955	63
1956	64.49
1957	63.59
1958	66.47
1959	67.21
1960	68.21
1961	68.46
1962	68.11
1963	68.58
1964	69.37
1965	68.95
1966	69.02
1967	68.8
1968	68.76
1969	68.24
1970	68.35
1971	68.48
1972	68.33
1973	68.44
1974	68.28
1975	67.79
1976	67.52
1977	67.46
1978	67.41
1979	67.11
1980	67.13
1981	67.39
1982	67.84
1983	67.58
1984	67.27
1985	67.94
1986	69.52
1987	69.66
1988	69.57
1989	69.25
1990	68.99
1991	68.83
1992	67.75
1993	65.37
1994	64.13
1995	64.68
1996	65.87
1997	66.93
1998	67.2
1999	66.09
2000	65.59
2001	65.59
2002	65.46
2003	65.5
2004	65.76
2005	65.9
2006	67.04
2007	67.7
2008	67.99
2009	68.89
2010	69.24
2011	69.85
2012	70.41
2013	70.71
2014	70.81
2015	70.79
2016	70.82
2017	70.95
2018	71.07