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	32.17
1872	32.24
1873	32.32
1874	32.39
1875	32.46
1876	32.53
1877	32.61
1878	32.68
1879	32.75
1880	32.82
1881	32.89
1882	32.97
1883	33.04
1884	33.11
1885	33.18
1886	33.26
1887	33.33
1888	33.4
1889	33.47
1890	33.54
1891	33.62
1892	33.69
1893	33.76
1894	33.83
1895	33.91
1896	33.98
1897	34.05
1898	34.12
1899	34.19
1900	34.27
1901	34.34
1902	34.41
1903	34.48
1904	34.56
1905	34.63
1906	34.7
1907	34.77
1908	34.85
1909	34.92
1910	34.99
1911	35.06
1912	35.13
1913	35.21
1914	35.28
1915	35.35
1916	35.42
1917	35.5
1918	29.48
1919	35.64
1920	35.71
1921	35.78
1922	35.86
1923	35.93
1924	36
1925	36.07
1926	36.15
1927	36.22
1928	36.29
1929	36.36
1930	36.43
1931	36.51
1932	36.58
1933	36.65
1934	36.72
1935	36.8
1936	36.87
1937	36.94
1938	37.01
1939	37.08
1940	37.16
1941	37.23
1942	37.3
1943	37.37
1944	37.45
1945	37.52
1946	39.66
1947	41.83
1948	43.99
1949	46.17
1950	48.35
1951	48.73
1952	49.4
1953	50.07
1954	50.74
1955	51.42
1956	52.1
1957	52.78
1958	53.48
1959	54.18
1960	54.88
1961	55.6
1962	56.33
1963	57.09
1964	57.89
1965	58.76
1966	59.72
1967	60.77
1968	61.93
1969	63.19
1970	64.55
1971	65.23
1972	66.16
1973	67.03
1974	67.98
1975	68.64
1976	69.25
1977	69.84
1978	70.24
1979	70.52
1980	71.06
1981	71.5
1982	71.69
1983	71.83
1984	71.93
1985	72.02
1986	72.13
1987	72.2
1988	72.31
1989	72.27
1990	72.07
1991	72.39
1992	72.58
1993	72.72
1994	72.8
1995	72.87
1996	72.91
1997	72.85
1998	72.81
1999	72.81
2000	73.01
2001	73.13
2002	73.28
2003	73.45
2004	73.64
2005	73.88
2006	74.13
2007	74.42
2008	74.69
2009	74.88
2010	75.13
2011	75.35
2012	75.6
2013	76.09
2014	76.57
2015	76.75
2016	77.32
2017	77.48
2018	77.64