Year	Years
1800	37.41
1801	38.51
1802	44.37
1803	44.84
1804	42.83
1805	43.02
1806	43.78
1807	42.58
1808	39.37
1809	39.22
1810	41.71
1811	39.31
1812	36.04
1813	40.9
1814	38.8
1815	42.67
1816	44.08
1817	46.48
1818	46.38
1819	45.26
1820	43.14
1821	39
1822	43.36
1823	46.37
1824	44.56
1825	43.14
1826	40.26
1827	41.11
1828	36.64
1829	31.02
1830	34.11
1831	29.25
1832	32.53
1833	36.2
1834	36.53
1835	38.35
1836	39.92
1837	41.5
1838	43.11
1839	41.86
1840	41.06
1841	42.64
1842	42.49
1843	43.85
1844	44
1845	43.35
1846	40.43
1847	40.47
1848	40.73
1849	39.5
1850	43.5
1851	44.57
1852	43.08
1853	38.6
1854	44.74
1855	46.18
1856	46.78
1857	42.49
1858	40.04
1859	44.42
1860	45.11
1861	47.65
1862	47.62
1863	47.58
1864	40.2
1865	39.85
1866	42.95
1867	44.97
1868	45.66
1869	46.13
1870	46.06
1871	46.15
1872	47.53
1873	47.58
1874	46.11
1875	44.51
1876	45.88
1877	47.41
1878	47.6
1879	46.29
1880	44.86
1881	48.37
1882	46.77
1883	48.56
1884	48.6
1885	49.69
1886	49
1887	48.71
1888	46.71
1889	47.83
1890	47.3
1891	46.83
1892	47.49
1893	47.14
1894	49.42
1895	50.93
1896	52.98
1897	51.85
1898	53.14
1899	50.7
1900	51.94
1901	52.65
1902	54.73
1903	54.8
1904	55.8
1905	54.4
1906	56.59
1907	56.12
1908	54.95
1909	57.43
1910	58.08
1911	57
1912	58.08
1913	58.92
1914	58.52
1915	58.45
1916	56.96
1917	57.3
1918	56.24
1919	56.99
1920	57.54
1921	61.77
1922	60.64
1923	61.21
1924	61.18
1925	61.95
1926	61.7
1927	61.23
1928	61.92
1929	61.99
1930	62.3
1931	61.88
1932	62.72
1933	63.64
1934	64.13
1935	62.9
1936	63.48
1937	63.96
1938	64.97
1939	65.81
1940	66.25
1941	66
1942	67.14
1943	67.44
1944	66.39
1945	66.07
1946	67.22
1947	68.52
1948	70.1
1949	70.13
1950	70.31
1951	70.91
1952	70.76
1953	71.13
1954	71.33
1955	71.9
1956	72.03
1957	71.79
1958	72.22
1959	72.19
1960	72.18
1961	72.44
1962	72.32
1963	72.41
1964	72.49
1965	72.37
1966	72.45
1967	72.93
1968	73.14
1969	73.23
1970	73.35
1971	73.49
1972	73.62
1973	73.83
1974	74
1975	74.13
1976	74.18
1977	74.44
1978	74.44
1979	74.42
1980	74.38
1981	74.45
1982	74.57
1983	74.59
1984	74.67
1985	74.71
1986	74.85
1987	74.97
1988	75.05
1989	75.11
1990	75.2
1991	75.32
1992	75.39
1993	75.43
1994	75.48
1995	75.57
1996	75.88
1997	76.19
1998	76.45
1999	76.56
2000	76.92
2001	77.12
2002	77.28
2003	77.52
2004	77.78
2005	78.08
2006	78.34
2007	78.61
2008	78.91
2009	79.17
2010	79.49
2011	79.84
2012	80.14
2013	80.39
2014	80.66
2015	80.74
2016	80.82
2017	80.96
2018	81.1