Year	Years
1800	26.93
1801	26.93
1802	26.93
1803	26.93
1804	26.93
1805	26.93
1806	26.93
1807	26.93
1808	26.93
1809	26.93
1810	26.93
1811	26.93
1812	26.93
1813	26.93
1814	26.93
1815	26.93
1816	26.93
1817	26.93
1818	26.93
1819	26.93
1820	26.93
1821	26.93
1822	26.93
1823	26.93
1824	26.93
1825	26.93
1826	26.93
1827	26.93
1828	26.93
1829	26.93
1830	26.93
1831	26.93
1832	26.93
1833	26.93
1834	26.93
1835	26.93
1836	26.93
1837	26.93
1838	26.93
1839	26.93
1840	26.93
1841	26.93
1842	26.93
1843	26.93
1844	26.93
1845	26.93
1846	26.93
1847	26.93
1848	26.93
1849	26.93
1850	26.93
1851	26.93
1852	26.93
1853	26.93
1854	26.93
1855	26.93
1856	26.93
1857	26.93
1858	26.93
1859	26.93
1860	26.93
1861	26.93
1862	26.93
1863	26.93
1864	26.4
1865	25.88
1866	25.35
1867	24.83
1868	24.31
1869	24.35
1870	24.39
1871	24.44
1872	24.48
1873	24.53
1874	24.74
1875	24.94
1876	25.14
1877	25.34
1878	25.54
1879	25.74
1880	25.95
1881	26.15
1882	26.35
1883	26.55
1884	26.75
1885	26.96
1886	27.16
1887	27.36
1888	27.56
1889	27.76
1890	27.97
1891	28.17
1892	28.37
1893	28.57
1894	28.77
1895	28.98
1896	29.18
1897	29.38
1898	29.21
1899	29.04
1900	28.89
1901	29.14
1902	29.39
1903	29.64
1904	29.9
1905	30.15
1906	30.4
1907	30.65
1908	30.91
1909	31.16
1910	31.41
1911	34.37
1912	34.8
1913	32.63
1914	32.22
1915	31.82
1916	31.82
1917	28.82
1918	18.79
1919	24.28
1920	19.76
1921	23.08
1922	23.98
1923	32.91
1924	35.42
1925	34.52
1926	37.74
1927	37.07
1928	38.58
1929	37.34
1930	36.65
1931	30.85
1932	22.82
1933	18.81
1934	39.04
1935	40.6
1936	42.28
1937	41.29
1938	42.99
1939	45.4
1940	42.92
1941	30.34
1942	26.12
1943	24.11
1944	33.56
1945	41.1
1946	49.97
1947	41.94
1948	50.05
1949	52.87
1950	55.18
1951	55.4
1952	55.84
1953	56.28
1954	56.72
1955	57.15
1956	57.59
1957	58.01
1958	58.44
1959	58.88
1960	59.3
1961	59.74
1962	60.17
1963	60.61
1964	61.05
1965	61.47
1966	61.9
1967	62.3
1968	62.68
1969	63.04
1970	63.37
1971	63.77
1972	64.15
1973	64.58
1974	64.93
1975	65.23
1976	65.54
1977	65.84
1978	66.04
1979	66.17
1980	66.34
1981	66.56
1982	66.75
1983	66.94
1984	67.22
1985	67.62
1986	67.98
1987	68.23
1988	68.31
1989	68.34
1990	68.28
1991	68.02
1992	67.54
1993	67.02
1994	66.51
1995	66.16
1996	66
1997	66.04
1998	66.12
1999	66.3
2000	66.36
2001	66.44
2002	66.42
2003	66.46
2004	66.56
2005	66.69
2006	67.09
2007	67.57
2008	68.01
2009	68.41
2010	68.77
2011	69.05
2012	69.3
2013	69.56
2014	69.79
2015	70.05
2016	70.29
2017	70.4
2018	70.5