Year	Years
1800	26
1801	26
1802	26
1803	26
1804	26
1805	26
1806	26
1807	26
1808	26
1809	26
1810	26
1811	26
1812	26
1813	26
1814	26
1815	26
1816	26
1817	26
1818	26
1819	26
1820	26
1821	26
1822	26
1823	26
1824	26
1825	26
1826	26
1827	26
1828	26
1829	26
1830	26
1831	26
1832	26
1833	26
1834	26
1835	26
1836	26
1837	26
1838	26
1839	26
1840	26
1841	26
1842	26
1843	26
1844	26
1845	26
1846	26
1847	26
1848	26
1849	26
1850	26
1851	26
1852	26
1853	26
1854	26
1855	26
1856	26
1857	26
1858	26
1859	26
1860	26
1861	26
1862	26
1863	26
1864	26
1865	26
1866	26
1867	26
1868	26
1869	26
1870	26
1871	26.01
1872	26.03
1873	26.04
1874	26.06
1875	26.07
1876	26.09
1877	26.1
1878	26.12
1879	26.13
1880	26.15
1881	26.16
1882	26.18
1883	26.19
1884	26.21
1885	26.22
1886	26.24
1887	26.25
1888	26.26
1889	26.28
1890	26.29
1891	26.31
1892	26.32
1893	26.34
1894	26.35
1895	26.37
1896	26.38
1897	26.4
1898	26.41
1899	26.43
1900	26.44
1901	26.46
1902	26.47
1903	26.49
1904	26.5
1905	26.51
1906	26.53
1907	26.54
1908	26.56
1909	26.57
1910	26.59
1911	26.6
1912	26.62
1913	26.63
1914	26.65
1915	26.66
1916	26.68
1917	26.69
1918	22.13
1919	26.72
1920	26.74
1921	26.75
1922	26.76
1923	26.78
1924	26.79
1925	26.81
1926	26.82
1927	26.84
1928	26.85
1929	26.87
1930	26.88
1931	26.9
1932	26.91
1933	26.93
1934	26.94
1935	26.96
1936	26.97
1937	26.99
1938	27
1939	27.01
1940	29.42
1941	31.83
1942	34.23
1943	36.64
1944	39.06
1945	41.48
1946	43.89
1947	46.31
1948	48.74
1949	51.17
1950	53.59
1951	54.19
1952	55.35
1953	56.47
1954	57.54
1955	58.58
1956	59.57
1957	60.54
1958	61.45
1959	62.33
1960	63.16
1961	63.96
1962	64.72
1963	65.44
1964	66.12
1965	66.76
1966	67.39
1967	67.97
1968	68.53
1969	69.07
1970	69.58
1971	70.36
1972	70.29
1973	69.94
1974	69.96
1975	70.05
1976	70.23
1977	70
1978	70.63
1979	71.22
1980	71.91
1981	72.4
1982	72.56
1983	73.06
1984	73.46
1985	73.89
1986	74.31
1987	74.73
1988	75
1989	75.69
1990	75.63
1991	77.2
1992	78.11
1993	77.52
1994	76.93
1995	76.2
1996	75.85
1997	75.65
1998	75.73
1999	76.18
2000	76.46
2001	76.47
2002	76.9
2003	77.16
2004	77.07
2005	77.03
2006	77.02
2007	77.11
2008	77.19
2009	77.47
2010	78.2
2011	78.87
2012	79.3
2013	79.72
2014	79.86
2015	79.79
2016	79.72
2017	79.84
2018	79.96