Year	Years
1800	40
1801	40.01
1802	40.02
1803	40.02
1804	40.03
1805	40.04
1806	40.05
1807	40.06
1808	40.06
1809	40.07
1810	40.08
1811	40.09
1812	40.1
1813	40.1
1814	40.11
1815	40.12
1816	40.13
1817	40.14
1818	40.14
1819	40.15
1820	40.16
1821	40.17
1822	40.18
1823	40.19
1824	40.19
1825	40.2
1826	40.21
1827	40.22
1828	40.23
1829	40.23
1830	40.24
1831	40.25
1832	40.26
1833	40.27
1834	40.27
1835	40.28
1836	40.29
1837	40.3
1838	40.31
1839	40.31
1840	40.32
1841	40.33
1842	38.66
1843	40.36
1844	41.9
1845	41.03
1846	37.83
1847	35.11
1848	38.04
1849	34.5
1850	42.28
1851	41.88
1852	41.77
1853	41.33
1854	39.78
1855	37.49
1856	40.92
1857	40.49
1858	40.18
1859	38.98
1860	45.12
1861	41.27
1862	43.12
1863	41.33
1864	39.81
1865	37.74
1866	32.47
1867	43.08
1868	42.56
1869	42.58
1870	40.92
1871	34.35
1872	40.04
1873	43.48
1874	44.67
1875	42.17
1876	43.68
1877	44.48
1878	44.24
1879	43.84
1880	42.48
1881	44.42
1882	45.54
1883	44.89
1884	44.24
1885	45.48
1886	43.36
1887	46.06
1888	44.92
1889	45.07
1890	44.14
1891	44.06
1892	43.16
1893	44.44
1894	46.65
1895	45.46
1896	48.06
1897	48.82
1898	48.12
1899	46.49
1900	46.59
1901	49.44
1902	49.18
1903	49.26
1904	49.32
1905	50.01
1906	49.74
1907	51.1
1908	49.69
1909	50.69
1910	51.36
1911	49.24
1912	52.25
1913	52.5
1914	42
1915	40
1916	41.99
1917	42.99
1918	34.94
1919	49.85
1920	53.65
1921	54.74
1922	55.14
1923	56.76
1924	57.5
1925	57.15
1926	56.96
1927	57.19
1928	57.52
1929	55.06
1930	57.16
1931	58.5
1932	58.58
1933	58.75
1934	60.41
1935	60
1936	60
1937	59.99
1938	60.14
1939	60
1940	55.95
1941	58.94
1942	59.19
1943	60.38
1944	56.93
1945	58.38
1946	61.91
1947	63.45
1948	64.97
1949	65.47
1950	66.34
1951	66.79
1952	67.98
1953	68.35
1954	68.61
1955	68.56
1956	68.85
1957	69.22
1958	69.91
1959	70.31
1960	69.63
1961	70.5
1962	70.23
1963	70.04
1964	70.71
1965	70.56
1966	70.63
1967	70.92
1968	70.61
1969	70.69
1970	70.95
1971	71.11
1972	71.35
1973	71.58
1974	71.85
1975	72.05
1976	72.3
1977	72.63
1978	72.8
1979	73.06
1980	73.22
1981	73.46
1982	73.66
1983	73.84
1984	74.18
1985	74.48
1986	74.8
1987	75.16
1988	75.5
1989	75.71
1990	75.95
1991	76.12
1992	76.36
1993	76.44
1994	76.66
1995	76.86
1996	77.09
1997	77.33
1998	77.47
1999	77.64
2000	77.8
2001	78
2002	78.21
2003	78.48
2004	78.85
2005	79.11
2006	79.37
2007	79.49
2008	79.61
2009	79.77
2010	79.98
2011	80.19
2012	80.32
2013	80.55
2014	80.87
2015	80.86
2016	80.89
2017	81.06
2018	81.23