Year	Years
1800	32.2
1801	32.33
1802	32.45
1803	32.58
1804	32.7
1805	32.86
1806	33.02
1807	33.18
1808	33.34
1809	33.5
1810	33.64
1811	33.78
1812	33.92
1813	34.06
1814	34.2
1815	34.3
1816	34.4
1817	34.5
1818	34.6
1819	34.7
1820	35.04
1821	35.38
1822	35.72
1823	36.06
1824	36.4
1825	36.24
1826	36.08
1827	35.92
1828	35.76
1829	35.6
1830	35.74
1831	35.88
1832	36.02
1833	36.16
1834	36.3
1835	36.36
1836	36.42
1837	36.48
1838	36.54
1839	36.6
1840	36.48
1841	36.36
1842	36.24
1843	36.12
1844	36
1845	36.04
1846	36.08
1847	36.12
1848	36.16
1849	36.2
1850	36.26
1851	36.32
1852	36.38
1853	36.44
1854	36.5
1855	36.52
1856	36.54
1857	36.56
1858	36.58
1859	36.6
1860	36.24
1861	35.88
1862	35.52
1863	35.16
1864	34.8
1865	33.76
1866	32.72
1867	31.68
1868	30.64
1869	29.6
1870	29.66
1871	29.73
1872	29.8
1873	29.87
1874	29.94
1875	31.13
1876	32.32
1877	33.51
1878	34.71
1879	35.9
1880	36.96
1881	38.01
1882	39.07
1883	40.12
1884	41.18
1885	41.74
1886	42.29
1887	42.85
1888	43.4
1889	43.96
1890	39.79
1891	35.61
1892	31.44
1893	27.26
1894	23.07
1895	22.27
1896	21.47
1897	20.67
1898	19.87
1899	19.07
1900	33.42
1901	33.64
1902	33.87
1903	34.09
1904	34.31
1905	34.53
1906	34.76
1907	34.98
1908	35.2
1909	35.44
1910	35.66
1911	35.89
1912	36.12
1913	36.34
1914	36.58
1915	36.8
1916	37.04
1917	37.27
1918	24.18
1919	37.73
1920	37.97
1921	38.26
1922	38.55
1923	38.84
1924	39.13
1925	39.43
1926	40
1927	40.56
1928	41.13
1929	41.71
1930	42.28
1931	42.92
1932	43.56
1933	44.2
1934	44.84
1935	45.48
1936	46.08
1937	46.69
1938	47.3
1939	47.9
1940	48.51
1941	49.23
1942	49.96
1943	50.68
1944	51.41
1945	52.13
1946	53.64
1947	55.15
1948	56.66
1949	58.18
1950	59.69
1951	60.01
1952	60.63
1953	61.25
1954	61.87
1955	62.49
1956	63.12
1957	63.74
1958	64.37
1959	64.99
1960	65.63
1961	66.29
1962	66.95
1963	67.61
1964	68.28
1965	68.95
1966	69.6
1967	70.24
1968	70.86
1969	71.44
1970	72
1971	72.37
1972	72.75
1973	73.04
1974	73.26
1975	73.47
1976	73.63
1977	73.77
1978	73.88
1979	74.11
1980	74.17
1981	74.33
1982	74.44
1983	74.49
1984	74.53
1985	74.54
1986	74.6
1987	74.63
1988	74.67
1989	74.78
1990	74.84
1991	74.9
1992	74.95
1993	74.95
1994	75.03
1995	75.23
1996	75.48
1997	75.71
1998	76.01
1999	76.28
2000	76.58
2001	76.86
2002	77.11
2003	77.3
2004	77.45
2005	77.61
2006	77.81
2007	77.98
2008	78.13
2009	78.26
2010	78.39
2011	78.53
2012	78.62
2013	78.69
2014	78.78
2015	78.89
2016	78.98
2017	79.16
2018	79.34