Year	Years
1800	28.8
1801	28.8
1802	28.8
1803	28.8
1804	28.8
1805	28.8
1806	28.8
1807	28.8
1808	28.8
1809	28.8
1810	28.8
1811	28.8
1812	28.8
1813	28.8
1814	28.8
1815	28.8
1816	28.8
1817	28.8
1818	28.8
1819	28.8
1820	28.8
1821	28.8
1822	28.8
1823	28.8
1824	28.8
1825	28.8
1826	28.8
1827	28.8
1828	28.8
1829	28.8
1830	28.8
1831	28.8
1832	28.8
1833	28.8
1834	28.8
1835	28.8
1836	28.8
1837	28.8
1838	28.8
1839	28.8
1840	28.8
1841	28.8
1842	28.8
1843	28.8
1844	28.8
1845	28.8
1846	28.8
1847	28.8
1848	28.8
1849	28.8
1850	28.8
1851	28.8
1852	28.8
1853	28.8
1854	28.8
1855	28.8
1856	28.8
1857	28.8
1858	28.8
1859	28.8
1860	28.8
1861	28.8
1862	28.8
1863	28.8
1864	28.8
1865	28.8
1866	28.8
1867	28.8
1868	28.8
1869	28.8
1870	28.8
1871	28.89
1872	28.98
1873	29.08
1874	29.17
1875	29.26
1876	29.35
1877	29.44
1878	29.54
1879	29.63
1880	29.72
1881	29.81
1882	29.91
1883	30
1884	30.09
1885	30.18
1886	30.27
1887	30.37
1888	30.46
1889	30.55
1890	30.64
1891	30.73
1892	30.83
1893	30.92
1894	31.01
1895	31.1
1896	31.2
1897	31.29
1898	31.38
1899	31.47
1900	31.56
1901	31.66
1902	31.75
1903	31.84
1904	31.93
1905	32.02
1906	32.12
1907	32.21
1908	32.3
1909	32.39
1910	32.49
1911	32.58
1912	32.67
1913	32.76
1914	32.85
1915	32.95
1916	33.04
1917	33.13
1918	21.29
1919	33.31
1920	33.41
1921	33.5
1922	33.59
1923	33.68
1924	33.78
1925	33.87
1926	33.96
1927	34.05
1928	34.14
1929	34.24
1930	34.33
1931	34.42
1932	34.51
1933	34.6
1934	34.7
1935	34.79
1936	34.88
1937	34.97
1938	35.07
1939	35.16
1940	35.25
1941	35.34
1942	35.43
1943	35.53
1944	35.62
1945	35.71
1946	35.8
1947	35.89
1948	35.99
1949	36.08
1950	36.17
1951	36.49
1952	37.02
1953	37.57
1954	38.14
1955	38.72
1956	39.3
1957	39.9
1958	40.5
1959	41.1
1960	41.69
1961	42.27
1962	42.86
1963	43.42
1964	44
1965	44.61
1966	45.28
1967	46.02
1968	46.84
1969	47.76
1970	48.77
1971	49.4
1972	49.94
1973	50.41
1974	50.85
1975	51.19
1976	51.57
1977	51.98
1978	52.41
1979	52.85
1980	53.29
1981	53.87
1982	54.48
1983	55.17
1984	55.85
1985	56.35
1986	57.14
1987	57.87
1988	58.56
1989	59.22
1990	59.9
1991	60.46
1992	61.1
1993	61.7
1994	62.11
1995	62.9
1996	63.92
1997	64.43
1998	65.12
1999	66.05
2000	65.62
2001	67.23
2002	67.97
2003	68.51
2004	69.09
2005	69.56
2006	70.17
2007	70.72
2008	71.28
2009	71.6
2010	72.13
2011	72.54
2012	72.87
2013	73.16
2014	73.46
2015	73.77
2016	74.07
2017	74.46
2018	74.83