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	28.93
1872	29.06
1873	29.19
1874	29.32
1875	29.45
1876	29.59
1877	29.72
1878	29.85
1879	29.98
1880	30.11
1881	30.24
1882	30.37
1883	30.5
1884	30.63
1885	30.76
1886	30.89
1887	31.02
1888	31.16
1889	31.29
1890	31.42
1891	31.55
1892	31.68
1893	31.81
1894	31.94
1895	32.07
1896	32.2
1897	32.33
1898	32.46
1899	32.59
1900	32.73
1901	32.86
1902	32.99
1903	33.12
1904	33.25
1905	33.38
1906	33.51
1907	33.64
1908	33.77
1909	33.9
1910	34.03
1911	34.16
1912	34.3
1913	34.43
1914	34.56
1915	34.69
1916	34.82
1917	34.95
1918	13.91
1919	35.21
1920	35.34
1921	35.47
1922	35.6
1923	35.74
1924	35.87
1925	36
1926	36.13
1927	36.26
1928	36.39
1929	36.52
1930	36.65
1931	36.78
1932	36.91
1933	37.04
1934	37.17
1935	37.31
1936	37.44
1937	37.57
1938	37.7
1939	37.83
1940	37.96
1941	38.09
1942	38.22
1943	38.35
1944	38.48
1945	38.61
1946	38.99
1947	39.36
1948	39.72
1949	40.1
1950	40.48
1951	40.82
1952	41.36
1953	41.86
1954	42.36
1955	42.83
1956	43.29
1957	43.74
1958	44.19
1959	44.64
1960	45.14
1961	45.68
1962	46.3
1963	47.02
1964	47.84
1965	48.79
1966	49.85
1967	51.03
1968	52.29
1969	53.63
1970	55
1971	55.39
1972	55.76
1973	56.09
1974	56.48
1975	56.87
1976	57.24
1977	57.61
1978	57.97
1979	58.36
1980	58.68
1981	56.84
1982	59.47
1983	59.84
1984	60.12
1985	60.37
1986	60.62
1987	60.87
1988	61.11
1989	61.31
1990	61.59
1991	61.82
1992	62.04
1993	62.27
1994	62.48
1995	62.67
1996	62.85
1997	62.84
1998	63.19
1999	63.18
2000	63.32
2001	63.58
2002	63.51
2003	63.99
2004	64.25
2005	64.3
2006	64.53
2007	64.52
2008	64.93
2009	65.13
2010	65.55
2011	65.99
2012	66.3
2013	66.53
2014	66.74
2015	67.04
2016	67.34
2017	67.59
2018	67.84