Year	Years
1800	37.92
1801	35.82
1802	38.37
1803	38.72
1804	40.52
1805	44.27
1806	43.76
1807	41.77
1808	37.26
1809	27.22
1810	36.48
1811	38.05
1812	43.46
1813	33.46
1814	41.74
1815	45.58
1816	46.33
1817	48.87
1818	46.75
1819	45.78
1820	46.96
1821	44.69
1822	46.13
1823	48.76
1824	47.64
1825	49.23
1826	47.63
1827	48.38
1828	46.22
1829	46.29
1830	45.75
1831	45.66
1832	47.62
1833	44.86
1834	41.95
1835	46.1
1836	46.46
1837	44.24
1838	42.93
1839	43.05
1840	45.62
1841	49.51
1842	48.37
1843	48.44
1844	49.71
1845	50.07
1846	48.05
1847	44.77
1848	45.02
1849	48.05
1850	49.53
1851	49.74
1852	48.46
1853	47.92
1854	51.65
1855	50.44
1856	50.37
1857	50.22
1858	51.59
1859	49.93
1860	50
1861	45.81
1862	44.7
1863	46.71
1864	48.78
1865	50.42
1866	49.92
1867	47.87
1868	47.16
1869	49.25
1870	50.86
1871	49.69
1872	50.02
1873	49.67
1874	47.77
1875	47.64
1876	46.83
1877	49.77
1878	51.79
1879	53.18
1880	51.91
1881	50.47
1882	47.4
1883	49.64
1884	50.8
1885	51.05
1886	51.71
1887	51.68
1888	50.37
1889	49.05
1890	48.59
1891	49.78
1892	49.67
1893	51.4
1894	50.61
1895	52.79
1896	53.83
1897	53.72
1898	53.95
1899	51.61
1900	53.46
1901	54.58
1902	56.48
1903	54.97
1904	56.08
1905	55.09
1906	56.9
1907	56.48
1908	56.3
1909	57.46
1910	57.97
1911	58.02
1912	57.73
1913	58.3
1914	57.8
1915	58.15
1916	57.23
1917	57.73
1918	50.28
1919	56.8
1920	58.87
1921	61.59
1922	60.77
1923	61.79
1924	62.1
1925	62.5
1926	63.24
1927	62.85
1928	63.38
1929	62.45
1930	64.08
1931	64.11
1932	64.58
1933	65.46
1934	66.19
1935	65.81
1936	65.81
1937	66.01
1938	67.06
1939	67.33
1940	65.86
1941	65.74
1942	65.65
1943	66.09
1944	65.77
1945	68.16
1946	69.48
1947	69.97
1948	71.09
1949	71.49
1950	71.56
1951	72.5
1952	72.63
1953	73.11
1954	73.19
1955	73.4
1956	73.45
1957	73.4
1958	73.39
1959	73.52
1960	73.54
1961	73.55
1962	73.43
1963	73.06
1964	73.56
1965	73.68
1966	73.96
1967	74.03
1968	73.91
1969	73.62
1970	74.03
1971	74.19
1972	74.38
1973	74.55
1974	74.74
1975	74.85
1976	75.04
1977	75.29
1978	75.45
1979	75.55
1980	75.75
1981	75.92
1982	76.04
1983	76.13
1984	76.2
1985	76.15
1986	76.22
1987	76.25
1988	76.44
1989	76.68
1990	76.85
1991	77.12
1992	77.27
1993	77.4
1994	77.69
1995	77.93
1996	78.18
1997	78.32
1998	78.4
1999	78.5
2000	78.71
2001	78.91
2002	79.11
2003	79.46
2004	79.82
2005	80.11
2006	80.35
2007	80.52
2008	80.69
2009	80.86
2010	81.04
2011	81.23
2012	81.48
2013	81.73
2014	82.01
2015	82.07
2016	82.09
2017	82.24
2018	82.39