Year	Years
1800	35.5
1801	35.5
1802	35.5
1803	35.5
1804	35.5
1805	35.5
1806	35.5
1807	35.5
1808	35.5
1809	35.5
1810	35.5
1811	35.5
1812	35.5
1813	35.5
1814	35.5
1815	35.5
1816	35.5
1817	35.5
1818	35.5
1819	35.5
1820	35.5
1821	35.5
1822	35.5
1823	35.5
1824	35.5
1825	35.5
1826	35.5
1827	35.5
1828	35.5
1829	35.5
1830	35.5
1831	35.5
1832	35.5
1833	35.5
1834	35.5
1835	35.5
1836	35.5
1837	35.5
1838	35.5
1839	35.5
1840	35.5
1841	35.5
1842	35.5
1843	35.5
1844	35.5
1845	35.5
1846	35.5
1847	35.5
1848	35.5
1849	35.5
1850	35.5
1851	35.5
1852	35.5
1853	35.5
1854	35.5
1855	35.5
1856	35.5
1857	35.5
1858	35.5
1859	35.5
1860	35.5
1861	35.5
1862	35.5
1863	35.5
1864	35.5
1865	35.5
1866	35.5
1867	35.5
1868	35.5
1869	35.5
1870	35.5
1871	35.51
1872	35.52
1873	35.54
1874	35.55
1875	35.56
1876	35.57
1877	35.58
1878	35.6
1879	35.61
1880	35.62
1881	35.63
1882	35.64
1883	35.65
1884	35.67
1885	35.68
1886	35.69
1887	35.7
1888	35.71
1889	35.73
1890	35.74
1891	35.75
1892	35.76
1893	35.77
1894	35.79
1895	35.8
1896	35.81
1897	35.82
1898	35.83
1899	35.84
1900	35.86
1901	35.87
1902	35.88
1903	35.89
1904	35.9
1905	35.92
1906	35.93
1907	35.94
1908	35.95
1909	35.96
1910	35.98
1911	35.99
1912	36
1913	36.01
1914	25.37
1915	16.24
1916	21.32
1917	20.31
1918	10.06
1919	36.08
1920	36.09
1921	36.88
1922	37.65
1923	38.44
1924	39.22
1925	40
1926	40.79
1927	41.57
1928	42.36
1929	43.14
1930	43.93
1931	44.71
1932	45.5
1933	46.29
1934	47.07
1935	47.86
1936	48.64
1937	49.44
1938	50.23
1939	51.01
1940	51.81
1941	45.13
1942	42.83
1943	41.3
1944	39.79
1945	44.43
1946	52.3
1947	56.62
1948	58.08
1949	58.92
1950	59.74
1951	60
1952	60.49
1953	61
1954	61.52
1955	62.05
1956	62.58
1957	63.14
1958	63.69
1959	64.26
1960	64.83
1961	65.4
1962	65.97
1963	66.54
1964	67.1
1965	67.65
1966	68.16
1967	68.67
1968	69.15
1969	69.59
1970	70.01
1971	70.09
1972	70.44
1973	70.76
1974	70.98
1975	71.14
1976	71.3
1977	71.42
1978	71.53
1979	71.61
1980	71.7
1981	71.75
1982	71.83
1983	71.89
1984	71.94
1985	72.08
1986	72.21
1987	72.34
1988	72.46
1989	72.53
1990	72.6
1991	71.69
1992	71.92
1993	72.3
1994	72.06
1995	70.73
1996	71.89
1997	72.05
1998	71.45
1999	70.96
2000	72.16
2001	72.39
2002	72.5
2003	72.69
2004	72.91
2005	73.22
2006	73.55
2007	73.89
2008	74.23
2009	74.45
2010	74.65
2011	74.85
2012	75.1
2013	75.34
2014	75.53
2015	75.74
2016	75.91
2017	76.04
2018	76.17