Year	Years
1800	32.9
1801	32.9
1802	32.9
1803	32.9
1804	32.9
1805	32.9
1806	32.9
1807	32.9
1808	32.9
1809	32.9
1810	32.9
1811	32.9
1812	32.9
1813	32.9
1814	32.9
1815	32.9
1816	32.9
1817	32.9
1818	32.9
1819	32.9
1820	32.9
1821	32.9
1822	32.9
1823	32.9
1824	32.9
1825	32.9
1826	32.9
1827	32.9
1828	32.9
1829	32.9
1830	32.9
1831	32.9
1832	32.9
1833	32.9
1834	32.9
1835	32.9
1836	32.9
1837	32.9
1838	32.9
1839	32.9
1840	32.9
1841	32.9
1842	32.9
1843	32.9
1844	32.9
1845	32.9
1846	32.9
1847	32.9
1848	32.9
1849	32.9
1850	32.9
1851	32.9
1852	32.9
1853	32.9
1854	32.9
1855	32.9
1856	32.9
1857	32.9
1858	32.9
1859	32.9
1860	32.9
1861	32.9
1862	32.9
1863	32.9
1864	32.9
1865	32.9
1866	32.9
1867	32.9
1868	32.9
1869	32.9
1870	32.9
1871	32.93
1872	32.96
1873	32.99
1874	33.02
1875	33.05
1876	33.08
1877	33.11
1878	33.14
1879	33.17
1880	33.2
1881	33.23
1882	33.26
1883	33.29
1884	33.32
1885	33.35
1886	33.38
1887	33.41
1888	33.44
1889	33.47
1890	33.5
1891	33.53
1892	33.57
1893	33.6
1894	33.63
1895	33.66
1896	33.69
1897	33.72
1898	33.75
1899	33.78
1900	33.81
1901	33.84
1902	33.87
1903	33.9
1904	33.93
1905	33.96
1906	33.99
1907	34.02
1908	34.05
1909	34.08
1910	34.11
1911	34.14
1912	34.17
1913	34.2
1914	34.23
1915	34.26
1916	34.29
1917	34.32
1918	30.36
1919	34.38
1920	34.41
1921	34.44
1922	34.47
1923	34.5
1924	34.53
1925	34.56
1926	34.59
1927	34.62
1928	34.65
1929	34.68
1930	34.71
1931	34.74
1932	34.77
1933	34.8
1934	34.83
1935	34.87
1936	34.9
1937	34.93
1938	34.96
1939	34.99
1940	36.41
1941	37.83
1942	39.26
1943	40.69
1944	42.12
1945	43.55
1946	44.99
1947	46.43
1948	47.86
1949	49.31
1950	50.76
1951	51.08
1952	51.69
1953	52.33
1954	53.01
1955	53.72
1956	54.46
1957	55.22
1958	55.99
1959	56.77
1960	57.55
1961	58.28
1962	58.98
1963	59.61
1964	60.19
1965	60.71
1966	61.2
1967	61.67
1968	62.13
1969	62.61
1970	63.1
1971	63.46
1972	63.81
1973	64.26
1974	64.78
1975	65.27
1976	65.76
1977	66.29
1978	66.78
1979	67.23
1980	67.75
1981	68.3
1982	68.74
1983	69.03
1984	69.46
1985	69.88
1986	70.24
1987	69.02
1988	70.86
1989	71.17
1990	71.44
1991	71.56
1992	71.96
1993	72.14
1994	72.58
1995	72.82
1996	73.14
1997	73.47
1998	73.7
1999	74.04
2000	74.27
2001	74.59
2002	74.83
2003	75.08
2004	75.35
2005	75.61
2006	75.84
2007	76.04
2008	76.28
2009	76.51
2010	76.72
2011	76.99
2012	77.24
2013	77.49
2014	77.75
2015	77.94
2016	77.86
2017	78.08
2018	78.31