Year	Years
1800	33.1
1801	33.1
1802	33.1
1803	33.1
1804	33.1
1805	33.1
1806	33.1
1807	33.1
1808	33.1
1809	33.1
1810	33.1
1811	33.1
1812	33.1
1813	33.1
1814	33.1
1815	33.1
1816	33.1
1817	33.1
1818	33.1
1819	33.1
1820	33.1
1821	33.1
1822	33.1
1823	33.1
1824	33.1
1825	33.1
1826	33.1
1827	33.1
1828	33.1
1829	33.1
1830	33.1
1831	33.1
1832	33.1
1833	33.1
1834	33.1
1835	33.1
1836	33.1
1837	33.1
1838	33.1
1839	33.1
1840	33.1
1841	33.1
1842	33.1
1843	33.1
1844	33.1
1845	33.1
1846	33.1
1847	33.1
1848	33.1
1849	33.1
1850	33.1
1851	33.1
1852	33.1
1853	33.1
1854	33.1
1855	33.1
1856	33.1
1857	33.1
1858	33.1
1859	33.1
1860	33.1
1861	33.1
1862	33.1
1863	33.1
1864	33.1
1865	33.1
1866	33.1
1867	33.1
1868	33.1
1869	33.1
1870	33.1
1871	33.16
1872	33.22
1873	33.28
1874	33.34
1875	33.4
1876	33.46
1877	33.52
1878	33.57
1879	33.63
1880	33.69
1881	33.75
1882	33.81
1883	33.87
1884	33.93
1885	33.99
1886	34.05
1887	34.11
1888	34.17
1889	34.23
1890	34.29
1891	34.35
1892	34.41
1893	34.46
1894	34.52
1895	34.58
1896	34.64
1897	34.7
1898	34.76
1899	34.82
1900	34.88
1901	34.94
1902	35
1903	35.06
1904	35.12
1905	35.18
1906	35.24
1907	35.3
1908	35.35
1909	35.41
1910	35.47
1911	35.53
1912	35.59
1913	35.65
1914	35.71
1915	35.77
1916	35.83
1917	35.89
1918	27.51
1919	36.01
1920	36.07
1921	36.13
1922	36.19
1923	36.24
1924	36.3
1925	36.36
1926	36.42
1927	36.48
1928	36.54
1929	36.6
1930	36.66
1931	36.72
1932	36.78
1933	36.84
1934	36.9
1935	36.96
1936	37.02
1937	37.08
1938	37.13
1939	37.19
1940	36.92
1941	34.95
1942	33.98
1943	33.93
1944	34.21
1945	36.87
1946	38.63
1947	39.63
1948	40.62
1949	41.61
1950	42.61
1951	42.35
1952	41.91
1953	41.79
1954	42.01
1955	42.53
1956	43.4
1957	44.55
1958	45.99
1959	47.64
1960	49.48
1961	51.42
1962	53.39
1963	55.32
1964	57.15
1965	58.87
1966	60.46
1967	61.96
1968	63.39
1969	64.77
1970	66.1
1971	66.91
1972	67.54
1973	68.09
1974	68.55
1975	69.08
1976	69.66
1977	69.69
1978	70.58
1979	71.03
1980	71.45
1981	71.66
1982	71.96
1983	72.21
1984	72.34
1985	72.61
1986	72.74
1987	69.89
1988	72.87
1989	72.93
1990	73.14
1991	73.38
1992	73.48
1993	73.78
1994	73.99
1995	74.12
1996	74.14
1997	74.37
1998	74.41
1999	74.45
2000	74.4
2001	74.62
2002	74.68
2003	74.85
2004	75
2005	75.22
2006	75.44
2007	75.56
2008	75.73
2009	75.89
2010	76.1
2011	60.95
2012	75.55
2013	75.95
2014	74.44
2015	74.16
2016	75.11
2017	75.29
2018	75.47