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	32.91
1872	32.91
1873	32.92
1874	32.93
1875	32.93
1876	32.94
1877	32.95
1878	32.95
1879	32.96
1880	32.97
1881	32.98
1882	32.98
1883	32.99
1884	33
1885	33
1886	33.01
1887	33.02
1888	33.02
1889	33.03
1890	33.04
1891	33.04
1892	33.05
1893	33.06
1894	33.06
1895	33.07
1896	33.08
1897	33.08
1898	33.09
1899	33.1
1900	33.11
1901	33.11
1902	33.12
1903	33.13
1904	33.13
1905	33.14
1906	33.15
1907	33.15
1908	33.16
1909	33.17
1910	33.17
1911	33.18
1912	33.19
1913	33.19
1914	33.2
1915	33.21
1916	33.21
1917	33.22
1918	29.37
1919	33.24
1920	33.24
1921	33.25
1922	33.26
1923	33.26
1924	33.27
1925	33.28
1926	34.16
1927	35.05
1928	35.94
1929	36.83
1930	37.72
1931	38.6
1932	39.49
1933	40.38
1934	41.27
1935	42.17
1936	43.06
1937	43.95
1938	44.85
1939	45.74
1940	46.63
1941	47.52
1942	48.41
1943	49.31
1944	50.2
1945	51.1
1946	51.99
1947	52.88
1948	53.78
1949	54.67
1950	55.57
1951	55.94
1952	56.64
1953	57.3
1954	57.91
1955	58.49
1956	59.02
1957	59.51
1958	59.96
1959	60.38
1960	60.78
1961	61.17
1962	61.55
1963	61.93
1964	62.32
1965	62.71
1966	63.11
1967	63.5
1968	63.88
1969	64.24
1970	64.59
1971	64.73
1972	64.9
1973	65
1974	65
1975	65.03
1976	65.14
1977	65.3
1978	65.52
1979	65.8
1980	66.12
1981	66.61
1982	67.07
1983	67.74
1984	68.27
1985	68.78
1986	68.86
1987	69.15
1988	69.26
1989	68.74
1990	70.14
1991	70.26
1992	70.13
1993	69.94
1994	70.02
1995	70.29
1996	70.41
1997	70.39
1998	70.21
1999	69.93
2000	69.69
2001	69.42
2002	69.3
2003	69.25
2004	69.31
2005	69.46
2006	69.58
2007	69.74
2008	69.84
2009	70.16
2010	70.32
2011	70.53
2012	70.74
2013	70.84
2014	70.97
2015	71.17
2016	71.39
2017	71.51
2018	71.62