Year	Years
1800	30.5
1801	30.5
1802	30.5
1803	30.5
1804	30.5
1805	30.5
1806	30.5
1807	30.5
1808	30.5
1809	30.5
1810	30.5
1811	30.5
1812	30.5
1813	30.5
1814	30.5
1815	30.5
1816	30.5
1817	30.5
1818	30.5
1819	30.5
1820	30.5
1821	30.5
1822	30.5
1823	30.5
1824	30.5
1825	30.5
1826	30.5
1827	30.5
1828	30.5
1829	30.5
1830	30.5
1831	30.5
1832	30.5
1833	30.5
1834	30.5
1835	30.5
1836	30.5
1837	30.5
1838	30.5
1839	30.5
1840	30.5
1841	30.5
1842	30.5
1843	30.5
1844	30.5
1845	30.5
1846	30.5
1847	30.5
1848	30.5
1849	30.5
1850	30.5
1851	30.5
1852	30.5
1853	30.5
1854	30.5
1855	30.5
1856	30.5
1857	30.5
1858	30.5
1859	30.5
1860	30.5
1861	30.5
1862	30.5
1863	30.5
1864	30.5
1865	30.5
1866	30.5
1867	30.5
1868	30.5
1869	30.5
1870	30.5
1871	30.5
1872	30.5
1873	30.5
1874	30.5
1875	30.5
1876	30.5
1877	30.5
1878	30.5
1879	30.5
1880	30.5
1881	30.5
1882	30.5
1883	30.5
1884	30.5
1885	30.5
1886	30.5
1887	30.5
1888	30.5
1889	30.5
1890	30.5
1891	30.5
1892	30.5
1893	30.5
1894	30.5
1895	30.5
1896	30.5
1897	30.5
1898	30.5
1899	30.5
1900	30.5
1901	30.5
1902	30.5
1903	30.5
1904	30.5
1905	30.5
1906	30.5
1907	30.5
1908	30.5
1909	30.5
1910	30.5
1911	30.5
1912	30.5
1913	30.5
1914	30.5
1915	30.5
1916	30.5
1917	30.5
1918	26.96
1919	30.5
1920	30.5
1921	30.5
1922	30.5
1923	30.5
1924	30.5
1925	30.5
1926	31.37
1927	32.24
1928	33.11
1929	33.98
1930	34.85
1931	35.72
1932	36.59
1933	37.46
1934	38.33
1935	39.2
1936	40.07
1937	40.94
1938	41.81
1939	42.68
1940	43.55
1941	44.42
1942	45.29
1943	46.16
1944	47.03
1945	47.9
1946	48.77
1947	49.64
1948	50.51
1949	51.38
1950	52.25
1951	52.52
1952	53.05
1953	53.58
1954	54.12
1955	54.67
1956	55.22
1957	55.78
1958	56.37
1959	57
1960	57.68
1961	58.44
1962	59.28
1963	60.19
1964	61.14
1965	62.1
1966	63
1967	63.8
1968	64.46
1969	64.97
1970	65.34
1971	65.57
1972	65.71
1973	65.81
1974	65.91
1975	66.04
1976	66.24
1977	66.51
1978	66.87
1979	67.3
1980	67.79
1981	68.31
1982	68.83
1983	69.33
1984	69.79
1985	70.2
1986	70.57
1987	70.92
1988	71.27
1989	71.6
1990	71.94
1991	72.27
1992	72.61
1993	72.93
1994	73.25
1995	73.56
1996	73.84
1997	74.1
1998	74.34
1999	74.55
2000	74.75
2001	74.92
2002	75.07
2003	75.21
2004	75.35
2005	75.5
2006	75.65
2007	75.82
2008	76.01
2009	76.21
2010	76.43
2011	76.65
2012	76.89
2013	77.12
2014	77.35
2015	77.58
2016	77.79
2017	78
2018	78.21