Year	Years
1800	28
1801	28
1802	28
1803	28
1804	28
1805	28
1806	28
1807	28
1808	28
1809	28
1810	28
1811	28
1812	28
1813	28
1814	28
1815	28
1816	28
1817	28
1818	28
1819	28
1820	28
1821	28
1822	28
1823	28
1824	28
1825	28
1826	28
1827	28
1828	28
1829	28
1830	28
1831	28
1832	28
1833	28
1834	28
1835	28
1836	28
1837	28
1838	28
1839	28
1840	28
1841	28
1842	28
1843	28
1844	28
1845	28
1846	28
1847	28
1848	28
1849	28
1850	28
1851	28
1852	28
1853	28
1854	28
1855	28
1856	28
1857	28
1858	28
1859	28
1860	28
1861	28
1862	28
1863	28
1864	28
1865	28
1866	28
1867	28
1868	28
1869	28
1870	28
1871	28.03
1872	28.07
1873	28.1
1874	28.13
1875	28.17
1876	28.2
1877	28.23
1878	28.27
1879	28.3
1880	28.33
1881	28.37
1882	28.4
1883	28.43
1884	28.47
1885	28.5
1886	28.53
1887	28.57
1888	28.6
1889	28.63
1890	28.67
1891	28.7
1892	28.73
1893	28.77
1894	28.8
1895	28.84
1896	28.87
1897	28.9
1898	28.94
1899	28.97
1900	29
1901	29.04
1902	29.07
1903	29.1
1904	29.14
1905	29.17
1906	29.2
1907	29.24
1908	29.27
1909	29.3
1910	29.34
1911	29.37
1912	29.4
1913	29.44
1914	29.47
1915	29.5
1916	29.54
1917	29.57
1918	9.98
1919	29.64
1920	29.67
1921	29.7
1922	29.74
1923	29.77
1924	29.8
1925	29.84
1926	30.43
1927	31.03
1928	31.62
1929	32.22
1930	32.81
1931	33.42
1932	34.01
1933	34.62
1934	35.22
1935	35.83
1936	36.43
1937	37.04
1938	37.64
1939	38.26
1940	38.87
1941	39.48
1942	40.09
1943	40.71
1944	41.32
1945	41.94
1946	42.56
1947	43.18
1948	43.8
1949	44.43
1950	45.04
1951	45.39
1952	46.02
1953	46.64
1954	47.25
1955	47.87
1956	48.47
1957	49.06
1958	49.64
1959	50.21
1960	50.76
1961	51.3
1962	51.83
1963	52.31
1964	52.79
1965	53.24
1966	53.68
1967	54.08
1968	54.47
1969	54.85
1970	55.23
1971	55.51
1972	55.87
1973	56.18
1974	56.53
1975	56.74
1976	56.89
1977	57.02
1978	57.28
1979	57.44
1980	57.56
1981	57.66
1982	57.53
1983	57.58
1984	57.73
1985	57.92
1986	58.1
1987	58.28
1988	58.49
1989	58.68
1990	58.81
1991	58.92
1992	59
1993	59.45
1994	59.27
1995	59.49
1996	59.51
1997	59.09
1998	59.39
1999	59.33
2000	59.34
2001	59.24
2002	59.33
2003	59.55
2004	59.85
2005	60.15
2006	60.47
2007	60.8
2008	61.27
2009	61.72
2010	62.16
2011	62.91
2012	63.71
2013	64.35
2014	64.87
2015	65.43
2016	66.01
2017	66.32
2018	66.62