Year	Years
1800	32.1
1801	32.1
1802	32.1
1803	32.1
1804	32.1
1805	32.1
1806	32.1
1807	32.1
1808	32.1
1809	32.1
1810	32.1
1811	32.1
1812	32.1
1813	32.1
1814	32.1
1815	32.1
1816	32.1
1817	32.1
1818	32.1
1819	32.1
1820	32.1
1821	32.1
1822	32.1
1823	32.1
1824	32.1
1825	32.1
1826	32.1
1827	32.1
1828	32.1
1829	32.1
1830	32.1
1831	32.1
1832	32.1
1833	32.1
1834	32.1
1835	32.1
1836	32.1
1837	32.1
1838	32.1
1839	32.1
1840	32.1
1841	32.1
1842	32.1
1843	32.1
1844	32.1
1845	32.1
1846	32.1
1847	32.1
1848	32.1
1849	32.1
1850	32.1
1851	32.1
1852	32.1
1853	32.1
1854	32.1
1855	32.1
1856	32.1
1857	32.1
1858	32.1
1859	32.1
1860	32.1
1861	32.1
1862	32.1
1863	32.1
1864	32.1
1865	32.1
1866	32.1
1867	32.1
1868	32.1
1869	32.1
1870	32.1
1871	32.12
1872	32.15
1873	32.17
1874	32.19
1875	32.21
1876	32.24
1877	32.26
1878	32.28
1879	32.31
1880	32.33
1881	32.35
1882	32.38
1883	32.4
1884	32.42
1885	32.44
1886	32.47
1887	32.49
1888	32.51
1889	32.54
1890	32.56
1891	32.58
1892	32.61
1893	32.63
1894	32.65
1895	32.67
1896	32.7
1897	32.72
1898	32.74
1899	32.77
1900	32.79
1901	32.81
1902	32.84
1903	32.86
1904	32.88
1905	32.9
1906	32.93
1907	32.95
1908	32.97
1909	33
1910	33.02
1911	33.04
1912	33.07
1913	33.09
1914	33.11
1915	33.13
1916	33.16
1917	33.18
1918	12.84
1919	33.23
1920	33.25
1921	33.27
1922	33.3
1923	33.32
1924	33.34
1925	33.36
1926	33.39
1927	33.41
1928	33.43
1929	33.46
1930	33.48
1931	33.5
1932	33.52
1933	33.55
1934	33.57
1935	33.59
1936	33.62
1937	33.64
1938	33.66
1939	33.69
1940	33.71
1941	33.73
1942	33.75
1943	33.78
1944	33.8
1945	33.82
1946	35.53
1947	37.25
1948	38.96
1949	40.68
1950	42.4
1951	42.58
1952	42.93
1953	43.3
1954	43.68
1955	44.08
1956	44.49
1957	44.91
1958	45.35
1959	45.79
1960	46.25
1961	46.71
1962	47.15
1963	47.61
1964	48.07
1965	48.53
1966	49.01
1967	49.52
1968	50.03
1969	50.58
1970	51.14
1971	51.53
1972	51.88
1973	52.23
1974	52.6
1975	52.94
1976	53.23
1977	53.52
1978	53.79
1979	54.13
1980	54.49
1981	54.9
1982	55.33
1983	55.59
1984	56.2
1985	56.6
1986	57
1987	57.38
1988	57.93
1989	58.15
1990	58.63
1991	58.92
1992	59.24
1993	59.54
1994	59.73
1995	59.99
1996	59.27
1997	60.18
1998	60.19
1999	61.26
2000	61.48
2001	62.39
2002	62.7
2003	63.52
2004	63.97
2005	64.29
2006	64.54
2007	64.7
2008	65.29
2009	64.92
2010	65.93
2011	65.63
2012	66.21
2013	66.53
2014	66.97
2015	67.27
2016	67.56
2017	67.78
2018	68