Year	Years
1800	39.41
1801	39.41
1802	39.41
1803	39.41
1804	39.41
1805	39.41
1806	39.41
1807	39.41
1808	39.41
1809	39.41
1810	39.41
1811	39.41
1812	39.41
1813	39.41
1814	39.41
1815	39.41
1816	39.41
1817	39.41
1818	39.41
1819	39.41
1820	39.41
1821	39.41
1822	39.41
1823	39.41
1824	39.41
1825	39.41
1826	39.41
1827	39.41
1828	39.41
1829	39.41
1830	39.41
1831	39.41
1832	39.41
1833	39.41
1834	39.41
1835	39.41
1836	39.41
1837	39.41
1838	39.41
1839	39.41
1840	39.41
1841	39.41
1842	39.41
1843	39.41
1844	39.41
1845	39.41
1846	39.41
1847	39.41
1848	39.41
1849	39.41
1850	39.41
1851	39.41
1852	39.41
1853	39.41
1854	39.41
1855	39.41
1856	39.41
1857	39.41
1858	39.41
1859	39.41
1860	39.41
1861	38
1862	34.5
1863	34
1864	31
1865	38
1866	39.41
1867	39.41
1868	39.41
1869	39.41
1870	39.41
1871	39.41
1872	39.41
1873	39.41
1874	39.41
1875	39.41
1876	39.41
1877	39.41
1878	39.41
1879	39.41
1880	39.41
1881	39.99
1882	40.57
1883	41.15
1884	41.73
1885	42.3
1886	42.88
1887	43.46
1888	44.04
1889	44.62
1890	45.2
1891	45.57
1892	45.94
1893	46.32
1894	46.69
1895	47.06
1896	47.43
1897	47.8
1898	48.17
1899	48.55
1900	48.92
1901	49.29
1902	50.49
1903	50.59
1904	49.59
1905	50.29
1906	50.08
1907	50.18
1908	51.88
1909	52.78
1910	51.78
1911	53.38
1912	54.08
1913	53.48
1914	54.58
1915	55.08
1916	54.18
1917	53.98
1918	47.18
1919	55.28
1920	55.38
1921	58.17
1922	58.07
1923	57.47
1924	58.47
1925	58.47
1926	57.87
1927	59.37
1928	58.27
1929	58.47
1930	59.57
1931	60.27
1932	60.97
1933	60.93
1934	60.26
1935	60.91
1936	60.37
1937	61.07
1938	62.39
1939	63.08
1940	63.24
1941	63.8
1942	64.59
1943	64.3
1944	65.09
1945	65.59
1946	66.29
1947	66.69
1948	67.26
1949	67.63
1950	68.07
1951	68.17
1952	68.39
1953	68.74
1954	69.53
1955	69.58
1956	69.66
1957	69.44
1958	69.71
1959	69.93
1960	69.86
1961	70.27
1962	70.16
1963	69.99
1964	70.27
1965	70.35
1966	70.37
1967	70.7
1968	70.36
1969	70.6
1970	70.86
1971	71.09
1972	71.32
1973	71.62
1974	72.03
1975	72.44
1976	72.81
1977	73.16
1978	73.45
1979	73.74
1980	73.91
1981	74.18
1982	74.38
1983	74.51
1984	74.64
1985	74.72
1986	74.82
1987	74.88
1988	75
1989	75.16
1990	75.4
1991	75.55
1992	75.71
1993	75.72
1994	75.79
1995	75.91
1996	76.24
1997	76.6
1998	76.74
1999	76.78
2000	76.9
2001	76.99
2002	77.12
2003	77.27
2004	77.49
2005	77.65
2006	77.91
2007	78.12
2008	78.33
2009	78.56
2010	78.74
2011	78.83
2012	78.91
2013	78.93
2014	78.92
2015	78.85
2016	78.84
2017	78.99
2018	79.14