Year	Years
1800	38
1801	38
1802	38
1803	38
1804	38
1805	38
1806	38
1807	38
1808	38
1809	38
1810	38
1811	38
1812	38
1813	38
1814	38
1815	38
1816	38
1817	38
1818	38
1819	38
1820	38
1821	38
1822	38
1823	38
1824	38
1825	38
1826	38
1827	38
1828	38
1829	38
1830	38
1831	38
1832	38
1833	38
1834	38
1835	38
1836	38
1837	38
1838	38
1839	38
1840	38
1841	38
1842	38
1843	38
1844	38
1845	38
1846	38
1847	38
1848	38
1849	38
1850	38
1851	38
1852	38
1853	38
1854	38
1855	38
1856	38
1857	38
1858	38
1859	38
1860	38
1861	38
1862	38
1863	38
1864	38
1865	38
1866	38
1867	38
1868	38
1869	38
1870	38
1871	38
1872	38
1873	38
1874	38
1875	38
1876	40.1
1877	40
1878	40.46
1879	41.8
1880	42.4
1881	41.86
1882	42.97
1883	44.93
1884	44.99
1885	43.82
1886	44.67
1887	45.42
1888	45.95
1889	45.12
1890	44.93
1891	44.69
1892	47.21
1893	46.05
1894	45.77
1895	46.82
1896	48.85
1897	49.07
1898	48.17
1899	49.26
1900	47.45
1901	48.91
1902	50.38
1903	50
1904	49.13
1905	49.64
1906	50.68
1907	51.15
1908	52.22
1909	51.57
1910	52.87
1911	51.68
1912	54.37
1913	54.16
1914	55.08
1915	55.9
1916	56.54
1917	55.76
1918	46.26
1919	54.92
1920	54.33
1921	57.81
1922	58.44
1923	59.98
1924	59.43
1925	59.88
1926	60.57
1927	60.03
1928	60.4
1929	60.1
1930	61.36
1931	61.17
1932	61.15
1933	62.33
1934	62.81
1935	62.05
1936	63.1
1937	63.42
1938	63.76
1939	63.92
1940	63.49
1941	64.89
1942	65.56
1943	65.74
1944	64.78
1945	65.32
1946	65.97
1947	66.16
1948	67.23
1949	67.86
1950	68.83
1951	68.6
1952	69.51
1953	69.41
1954	69.88
1955	69.96
1956	70.09
1957	70.44
1958	71.17
1959	71.33
1960	71.31
1961	71.63
1962	71.19
1963	71.18
1964	72.06
1965	72.19
1966	72.33
1967	72.63
1968	72.58
1969	72.59
1970	72.99
1971	73.24
1972	73.64
1973	74.04
1974	74.4
1975	74.69
1976	74.96
1977	75.23
1978	75.33
1979	75.48
1980	75.63
1981	75.82
1982	76.04
1983	76.25
1984	76.62
1985	76.88
1986	77.08
1987	77.25
1988	77.33
1989	77.41
1990	77.44
1991	77.6
1992	77.87
1993	78.15
1994	78.37
1995	78.46
1996	78.89
1997	79.15
1998	79.42
1999	79.68
2000	79.87
2001	80.11
2002	80.3
2003	80.52
2004	80.93
2005	81.18
2006	81.38
2007	81.6
2008	81.83
2009	81.98
2010	82.21
2011	82.46
2012	82.58
2013	82.73
2014	83.02
2015	83.09
2016	83.12
2017	83.29
2018	83.45