Year	Years
1800	26.2
1801	26.2
1802	26.2
1803	26.2
1804	26.2
1805	26.2
1806	26.2
1807	26.2
1808	26.2
1809	26.2
1810	26.2
1811	26.2
1812	26.2
1813	26.2
1814	26.2
1815	26.2
1816	26.2
1817	26.2
1818	26.2
1819	26.2
1820	26.2
1821	26.2
1822	26.2
1823	26.2
1824	26.2
1825	26.2
1826	26.2
1827	26.2
1828	26.2
1829	26.2
1830	26.2
1831	26.2
1832	26.2
1833	26.2
1834	26.2
1835	26.2
1836	26.2
1837	26.2
1838	26.2
1839	26.2
1840	26.2
1841	26.2
1842	26.2
1843	26.2
1844	26.2
1845	26.2
1846	26.2
1847	26.2
1848	26.2
1849	26.2
1850	26.2
1851	26.2
1852	26.2
1853	26.2
1854	26.2
1855	26.2
1856	26.2
1857	26.2
1858	26.2
1859	26.2
1860	26.2
1861	26.2
1862	26.2
1863	26.2
1864	25.68
1865	25.15
1866	24.63
1867	24.1
1868	23.58
1869	23.62
1870	23.67
1871	23.71
1872	23.77
1873	23.81
1874	24.02
1875	24.22
1876	24.43
1877	24.63
1878	24.84
1879	25.04
1880	25.25
1881	25.45
1882	25.66
1883	25.86
1884	26.07
1885	26.28
1886	26.48
1887	26.69
1888	26.89
1889	27.1
1890	27.3
1891	27.51
1892	27.72
1893	27.92
1894	28.13
1895	28.34
1896	28.54
1897	28.75
1898	28.58
1899	28.43
1900	28.26
1901	28.52
1902	28.78
1903	29.03
1904	29.29
1905	29.55
1906	29.81
1907	30.06
1908	30.32
1909	30.58
1910	30.84
1911	33.83
1912	34.26
1913	32.07
1914	31.67
1915	31.27
1916	31.28
1917	28.25
1918	18.17
1919	23.69
1920	19.15
1921	22.49
1922	23.4
1923	32.4
1924	34.93
1925	34.03
1926	37.27
1927	36.61
1928	38.13
1929	36.89
1930	36.2
1931	16.19
1932	8.1
1933	4.05
1934	38.62
1935	40.21
1936	41.91
1937	40.91
1938	42.62
1939	45.06
1940	42.57
1941	27.37
1942	24.33
1943	23.32
1944	31.44
1945	39.56
1946	49.72
1947	41.61
1948	49.81
1949	52.66
1950	55.01
1951	55.25
1952	55.73
1953	56.2
1954	56.67
1955	57.13
1956	57.6
1957	58.06
1958	58.52
1959	58.98
1960	59.43
1961	59.9
1962	60.36
1963	60.82
1964	61.29
1965	61.74
1966	62.19
1967	62.61
1968	63.02
1969	63.4
1970	63.75
1971	64.04
1972	64.25
1973	64.46
1974	64.7
1975	64.92
1976	65.13
1977	65.35
1978	65.58
1979	65.79
1980	66.04
1981	66.27
1982	66.53
1983	66.82
1984	67.09
1985	67.42
1986	67.93
1987	68.13
1988	68.09
1989	67.94
1990	67.8
1991	67.44
1992	66.84
1993	66
1994	65.1
1995	64.37
1996	64.1
1997	64.13
1998	64.28
1999	64.44
2000	64.56
2001	64.73
2002	64.87
2003	64.94
2004	64.92
2005	64.95
2006	65.24
2007	65.92
2008	66.81
2009	67.68
2010	68.37
2011	69.02
2012	69.7
2013	70.46
2014	71.18
2015	71.62
2016	71.66
2017	71.81
2018	71.96