Year	Years
1800	35
1801	35
1802	35
1803	35
1804	35
1805	35
1806	35
1807	35
1808	35
1809	35
1810	35
1811	35
1812	35
1813	35
1814	35
1815	35
1816	35
1817	35
1818	35
1819	35
1820	35
1821	35
1822	35
1823	35
1824	35
1825	35
1826	35
1827	35
1828	35
1829	35
1830	35
1831	35
1832	35
1833	35
1834	35
1835	35
1836	35
1837	35
1838	35
1839	35
1840	35
1841	35
1842	35
1843	35
1844	35
1845	35
1846	35
1847	35
1848	35
1849	35
1850	35
1851	35
1852	35
1853	35
1854	35
1855	35
1856	35
1857	35
1858	35
1859	35
1860	35
1861	35
1862	35
1863	35
1864	35
1865	35
1866	35
1867	35
1868	35
1869	35
1870	35
1871	35.03
1872	35.06
1873	35.1
1874	35.13
1875	35.16
1876	35.19
1877	35.22
1878	35.25
1879	35.29
1880	35.32
1881	35.35
1882	35.38
1883	35.41
1884	35.45
1885	35.48
1886	35.51
1887	35.54
1888	35.57
1889	35.61
1890	35.64
1891	35.67
1892	35.7
1893	35.73
1894	35.76
1895	35.8
1896	35.83
1897	35.86
1898	35.89
1899	35.92
1900	35.96
1901	35.99
1902	36.02
1903	36.05
1904	36.08
1905	36.12
1906	36.15
1907	36.18
1908	36.21
1909	36.24
1910	36.27
1911	36.31
1912	36.34
1913	36.37
1914	28.08
1915	7.29
1916	19.8
1917	22.94
1918	19.9
1919	31.34
1920	30.32
1921	30.35
1922	34.56
1923	36.69
1924	36.72
1925	36.75
1926	36.78
1927	36.82
1928	36.85
1929	36.88
1930	36.91
1931	37.01
1932	37.1
1933	37.2
1934	37.3
1935	37.4
1936	37.5
1937	37.59
1938	36.75
1939	35.91
1940	35.08
1941	34.24
1942	33.39
1943	34.86
1944	36.33
1945	37.82
1946	39.29
1947	40.77
1948	41.54
1949	42.32
1950	43.1
1951	43.34
1952	43.8
1953	44.31
1954	44.87
1955	45.47
1956	46.11
1957	46.79
1958	47.52
1959	48.29
1960	49.09
1961	49.92
1962	50.75
1963	51.61
1964	52.44
1965	53.28
1966	54.09
1967	54.86
1968	55.62
1969	56.34
1970	57.05
1971	57.78
1972	58.48
1973	59.03
1974	59.6
1975	60.18
1976	60.89
1977	61.99
1978	62.86
1979	63.27
1980	64.16
1981	65.03
1982	65.82
1983	66.56
1984	67.48
1985	68
1986	68.63
1987	69.91
1988	70.41
1989	70.11
1990	70.16
1991	70.18
1992	70.46
1993	70.57
1994	70.72
1995	70.92
1996	71.43
1997	71.94
1998	72.62
1999	71.97
2000	74.11
2001	74.8
2002	75.39
2003	75.46
2004	76.27
2005	76.65
2006	77.23
2007	78.12
2008	78.76
2009	78.15
2010	78.21
2011	78.23
2012	78.58
2013	78.44
2014	78.76
2015	78.95
2016	79.09
2017	79.35
2018	79.61