Year	Years
1800	35.1
1801	35.1
1802	35.1
1803	35.1
1804	35.1
1805	35.1
1806	35.1
1807	35.1
1808	35.1
1809	35.1
1810	35.1
1811	35.1
1812	35.1
1813	35.1
1814	35.1
1815	35.1
1816	35.1
1817	35.1
1818	35.1
1819	35.1
1820	35.1
1821	35.1
1822	35.1
1823	35.1
1824	35.1
1825	35.1
1826	35.1
1827	35.1
1828	35.1
1829	35.1
1830	35.1
1831	35.1
1832	35.1
1833	35.1
1834	35.1
1835	35.1
1836	35.1
1837	35.1
1838	35.1
1839	35.1
1840	35.1
1841	35.1
1842	35.1
1843	35.1
1844	35.1
1845	35.1
1846	35.1
1847	35.1
1848	35.1
1849	35.1
1850	35.1
1851	35.1
1852	35.1
1853	35.1
1854	35.1
1855	35.1
1856	35.1
1857	35.1
1858	35.1
1859	35.1
1860	35.1
1861	35.1
1862	35.1
1863	35.1
1864	35.1
1865	35.1
1866	35.1
1867	35.1
1868	35.1
1869	35.1
1870	35.1
1871	35.1
1872	35.1
1873	35.1
1874	35.11
1875	35.11
1876	35.11
1877	35.11
1878	35.11
1879	35.11
1880	35.11
1881	35.12
1882	35.12
1883	35.12
1884	35.12
1885	35.12
1886	35.12
1887	35.12
1888	35.13
1889	35.13
1890	35.13
1891	35.13
1892	35.13
1893	35.13
1894	35.13
1895	35.13
1896	35.14
1897	35.14
1898	35.14
1899	35.14
1900	35.14
1901	35.14
1902	35.14
1903	35.15
1904	35.15
1905	35.15
1906	35.15
1907	35.15
1908	35.15
1909	35.15
1910	35.16
1911	35.16
1912	35.16
1913	35.16
1914	35.16
1915	35.16
1916	35.16
1917	35.17
1918	19.3
1919	35.17
1920	35.17
1921	35.71
1922	36.26
1923	36.81
1924	37.36
1925	37.9
1926	38.45
1927	39
1928	39.54
1929	40.09
1930	40.64
1931	41.18
1932	41.73
1933	42.28
1934	42.83
1935	43.37
1936	43.92
1937	44.47
1938	45.01
1939	45.56
1940	46.11
1941	31.46
1942	27.6
1943	23.88
1944	21.84
1945	25.98
1946	41.12
1947	49.15
1948	50.15
1949	50.86
1950	51.58
1951	52.18
1952	53.34
1953	54.44
1954	55.48
1955	56.47
1956	57.4
1957	58.27
1958	59.09
1959	59.85
1960	60.57
1961	61.24
1962	61.87
1963	62.47
1964	63.04
1965	63.62
1966	64.18
1967	64.74
1968	65.3
1969	65.88
1970	66.44
1971	66.8
1972	67.14
1973	67.45
1974	67.78
1975	68.08
1976	68.36
1977	68.65
1978	68.94
1979	69.26
1980	69.57
1981	69.86
1982	70.14
1983	70.39
1984	70.63
1985	70.88
1986	71.23
1987	71.49
1988	71.71
1989	71.94
1990	72.08
1991	72.21
1992	69.97
1993	68.76
1994	70.22
1995	68.87
1996	72.87
1997	73.36
1998	73.82
1999	74.4
2000	74.83
2001	75.12
2002	75.26
2003	75.39
2004	75.58
2005	75.74
2006	75.92
2007	76.09
2008	76.32
2009	76.56
2010	76.75
2011	76.86
2012	77.04
2013	77.16
2014	77.17
2015	77.36
2016	77.57
2017	77.75
2018	77.93