Year	Years
1800	29.8
1801	29.8
1802	29.8
1803	29.8
1804	29.8
1805	29.8
1806	29.8
1807	29.8
1808	29.8
1809	29.8
1810	29.8
1811	29.8
1812	29.8
1813	29.8
1814	29.8
1815	29.8
1816	29.8
1817	29.8
1818	29.8
1819	29.8
1820	29.8
1821	29.8
1822	29.8
1823	29.8
1824	29.8
1825	29.8
1826	29.8
1827	29.8
1828	29.8
1829	29.8
1830	29.8
1831	29.8
1832	29.8
1833	29.8
1834	29.8
1835	29.8
1836	29.8
1837	29.8
1838	29.8
1839	29.8
1840	29.8
1841	29.8
1842	29.8
1843	29.8
1844	29.8
1845	29.8
1846	29.8
1847	29.8
1848	29.8
1849	29.8
1850	29.8
1851	29.8
1852	29.8
1853	29.8
1854	29.8
1855	29.8
1856	29.8
1857	29.8
1858	29.8
1859	29.8
1860	29.8
1861	29.8
1862	29.8
1863	29.8
1864	29.8
1865	29.8
1866	29.8
1867	29.8
1868	29.8
1869	29.8
1870	29.8
1871	29.83
1872	29.87
1873	29.9
1874	29.93
1875	29.97
1876	30
1877	30.04
1878	30.07
1879	30.1
1880	30.14
1881	30.17
1882	30.2
1883	30.24
1884	30.27
1885	30.3
1886	30.34
1887	30.37
1888	30.41
1889	30.44
1890	30.47
1891	30.51
1892	30.54
1893	30.57
1894	30.61
1895	30.64
1896	30.67
1897	30.71
1898	30.74
1899	30.78
1900	30.81
1901	30.84
1902	30.88
1903	30.91
1904	30.94
1905	30.98
1906	31.01
1907	31.04
1908	31.08
1909	31.11
1910	31.15
1911	31.18
1912	31.21
1913	31.25
1914	31.28
1915	31.31
1916	31.35
1917	31.38
1918	12.14
1919	31.45
1920	31.48
1921	31.52
1922	31.55
1923	31.58
1924	31.62
1925	31.65
1926	31.68
1927	31.72
1928	31.75
1929	31.78
1930	31.82
1931	31.85
1932	31.89
1933	31.92
1934	31.95
1935	31.99
1936	32.02
1937	32.05
1938	32.09
1939	32.12
1940	32.16
1941	32.19
1942	32.22
1943	32.26
1944	32.29
1945	32.32
1946	33.25
1947	34.16
1948	35.09
1949	36.02
1950	36.94
1951	37.14
1952	37.51
1953	37.88
1954	38.24
1955	38.62
1956	38.99
1957	39.36
1958	39.73
1959	40.1
1960	40.47
1961	40.85
1962	41.22
1963	41.59
1964	41.97
1965	42.35
1966	42.73
1967	43.1
1968	43.48
1969	43.86
1970	44.24
1971	44.5
1972	44.76
1973	45.09
1974	45.47
1975	46.01
1976	46.61
1977	47.25
1978	47.77
1979	44.34
1980	48.62
1981	48.98
1982	49.27
1983	49.43
1984	49.33
1985	49.4
1986	49.29
1987	49.05
1988	48.84
1989	48.56
1990	48.18
1991	47.95
1992	47.99
1993	47.94
1994	47.85
1995	47.89
1996	48.47
1997	50.67
1998	51.99
1999	53.1
2000	54.36
2001	55.81
2002	56.96
2003	57.46
2004	58
2005	58.08
2006	58.96
2007	59.36
2008	59.77
2009	60.25
2010	60.93
2011	61.41
2012	62.26
2013	63.67
2014	64.69
2015	65.21
2016	65.52
2017	65.81
2018	66.13