Year	Years
1800	35.8
1801	35.84
1802	35.89
1803	35.93
1804	35.98
1805	36.02
1806	36.06
1807	36.11
1808	36.15
1809	36.2
1810	36.24
1811	36.28
1812	36.33
1813	36.37
1814	36.42
1815	36.46
1816	36.5
1817	36.55
1818	36.59
1819	36.64
1820	36.68
1821	36.72
1822	36.77
1823	36.81
1824	36.86
1825	36.9
1826	36.94
1827	36.99
1828	37.03
1829	37.08
1830	37.12
1831	37.16
1832	37.21
1833	37.25
1834	37.3
1835	37.34
1836	37.38
1837	37.43
1838	37.47
1839	37.52
1840	37.56
1841	37.6
1842	37.65
1843	37.69
1844	37.74
1845	37.78
1846	37.82
1847	37.87
1848	37.91
1849	37.96
1850	38
1851	38.04
1852	38.09
1853	38.13
1854	38.18
1855	38.22
1856	38.26
1857	38.31
1858	38.35
1859	38.4
1860	38.44
1861	38.48
1862	38.53
1863	38.57
1864	38.62
1865	38.66
1866	38.7
1867	38.75
1868	38.79
1869	38.84
1870	38.88
1871	38.92
1872	38.97
1873	39.01
1874	39.06
1875	39.09
1876	39.13
1877	39.18
1878	39.22
1879	39.27
1880	39.31
1881	39.35
1882	39.4
1883	39.43
1884	39.48
1885	39.52
1886	39.56
1887	39.61
1888	39.65
1889	39.7
1890	39.73
1891	39.77
1892	39.82
1893	39.86
1894	39.91
1895	39.95
1896	39.99
1897	40.04
1898	40.07
1899	40.12
1900	40.16
1901	41.31
1902	42.46
1903	42.73
1904	42.98
1905	43.25
1906	43.32
1907	43.39
1908	43.47
1909	43.54
1910	43.6
1911	43.67
1912	43.75
1913	43.82
1914	43.89
1915	43.96
1916	44.03
1917	44.1
1918	33.67
1919	44.24
1920	44.31
1921	44.39
1922	44.46
1923	44.53
1924	44.75
1925	44.99
1926	45.22
1927	45.97
1928	46.71
1929	47.46
1930	48.21
1931	48.71
1932	49.2
1933	49.7
1934	50.2
1935	50.7
1936	51.19
1937	51.69
1938	51.92
1939	52.15
1940	52.36
1941	52.59
1942	51.88
1943	51.38
1944	49.88
1945	51.88
1946	53.47
1947	53.95
1948	55.65
1949	57.78
1950	61.23
1951	60.47
1952	59.45
1953	63.97
1954	64.23
1955	64.64
1956	65.03
1957	66.43
1958	68.52
1959	66.38
1960	68.98
1961	70.02
1962	69.31
1963	70.13
1964	70.93
1965	71.09
1966	71.01
1967	70.2
1968	71.03
1969	70.21
1970	71.04
1971	70.99
1972	71.02
1973	71.21
1974	71.16
1975	71.25
1976	71.31
1977	71.07
1978	71.22
1979	71.29
1980	71.25
1981	71.41
1982	71.27
1983	71.41
1984	71.38
1985	71.34
1986	71.53
1987	71.55
1988	71.6
1989	71.59
1990	71.48
1991	71.35
1992	71.26
1993	71.22
1994	70.94
1995	71.02
1996	70.88
1997	70.63
1998	71.13
1999	71.51
2000	71.75
2001	71.99
2002	72.25
2003	72.46
2004	72.56
2005	72.66
2006	72.79
2007	73.06
2008	73.35
2009	73.61
2010	73.86
2011	74.31
2012	74.69
2013	74.9
2014	74.97
2015	75.03
2016	75.07
2017	75.2
2018	75.32