Year	Years
1800	32.1
1801	32.1
1802	32.1
1803	32.1
1804	32.1
1805	32.1
1806	32.1
1807	32.1
1808	32.1
1809	32.1
1810	32.1
1811	32.1
1812	32.1
1813	32.1
1814	32.1
1815	32.1
1816	32.1
1817	32.1
1818	32.1
1819	32.1
1820	32.1
1821	32.1
1822	32.1
1823	32.1
1824	32.1
1825	32.1
1826	32.1
1827	32.1
1828	32.1
1829	32.1
1830	32.1
1831	32.1
1832	32.1
1833	32.1
1834	32.1
1835	32.1
1836	32.1
1837	32.1
1838	32.1
1839	32.1
1840	32.1
1841	32.1
1842	32.1
1843	32.1
1844	32.1
1845	32.1
1846	32.1
1847	32.1
1848	32.1
1849	32.1
1850	32.1
1851	32.1
1852	32.1
1853	32.1
1854	32.1
1855	32.1
1856	32.1
1857	32.1
1858	32.1
1859	32.1
1860	32.1
1861	32.1
1862	32.1
1863	32.1
1864	32.1
1865	32.1
1866	32.1
1867	32.1
1868	32.1
1869	32.1
1870	32.1
1871	32.14
1872	32.18
1873	32.22
1874	32.25
1875	32.29
1876	32.33
1877	32.37
1878	32.41
1879	32.45
1880	32.49
1881	32.52
1882	32.56
1883	32.6
1884	32.64
1885	32.68
1886	32.72
1887	32.75
1888	32.79
1889	32.83
1890	32.87
1891	32.91
1892	32.95
1893	32.99
1894	33.02
1895	33.06
1896	33.1
1897	33.14
1898	33.18
1899	33.22
1900	33.26
1901	33.29
1902	33.33
1903	33.37
1904	33.41
1905	33.45
1906	33.49
1907	33.52
1908	33.56
1909	33.6
1910	33.64
1911	33.68
1912	33.72
1913	33.76
1914	33.79
1915	33.83
1916	33.87
1917	33.91
1918	28.14
1919	33.99
1920	34.03
1921	34.06
1922	34.1
1923	34.14
1924	34.18
1925	34.22
1926	34.26
1927	34.3
1928	34.33
1929	34.37
1930	34.41
1931	34.45
1932	34.49
1933	34.53
1934	34.56
1935	34.6
1936	35.65
1937	36.7
1938	37.75
1939	38.81
1940	39.86
1941	40.92
1942	41.98
1943	43.05
1944	44.11
1945	45.18
1946	46.24
1947	47.32
1948	48.39
1949	49.47
1950	50.55
1951	50.7
1952	50.99
1953	51.31
1954	51.66
1955	52.06
1956	52.5
1957	52.98
1958	53.49
1959	54.05
1960	54.66
1961	55.31
1962	56.01
1963	56.73
1964	57.51
1965	58.31
1966	59.12
1967	59.94
1968	60.76
1969	61.6
1970	62.43
1971	66.47
1972	66.86
1973	40.69
1974	67.03
1975	67.08
1976	67.28
1977	67.53
1978	68.05
1979	68.55
1980	69.03
1981	69.37
1982	44.35
1983	70.07
1984	70.4
1985	70.7
1986	70.97
1987	70.78
1988	70.82
1989	70.86
1990	70.96
1991	71.07
1992	71.27
1993	71.49
1994	71.84
1995	72.04
1996	72.09
1997	72.08
1998	72.05
1999	71.92
2000	71.43
2001	71.73
2002	71.39
2003	71.32
2004	71.49
2005	71.88
2006	71.86
2007	71.98
2008	72.1
2009	71.9
2010	72.27
2011	72.14
2012	72.1
2013	72.07
2014	70.66
2015	71.81
2016	71.85
2017	72.02
2018	72.19