Year	Years
1800	28.21
1801	28.2
1802	28.19
1803	28.18
1804	28.17
1805	28.16
1806	28.15
1807	28.14
1808	28.13
1809	28.12
1810	28.11
1811	28.1
1812	28.09
1813	28.08
1814	28.07
1815	28.06
1816	28.05
1817	28.04
1818	28.03
1819	28.02
1820	28.01
1821	28
1822	27.99
1823	27.98
1824	27.97
1825	27.95
1826	27.94
1827	27.93
1828	27.92
1829	27.91
1830	27.9
1831	27.89
1832	27.88
1833	27.87
1834	27.86
1835	27.85
1836	27.84
1837	27.83
1838	27.82
1839	27.81
1840	27.8
1841	27.79
1842	27.78
1843	27.77
1844	27.76
1845	27.75
1846	27.74
1847	27.73
1848	27.72
1849	27.71
1850	27.7
1851	27.69
1852	27.68
1853	27.67
1854	27.66
1855	27.65
1856	27.64
1857	27.63
1858	27.62
1859	27.61
1860	27.6
1861	27.59
1862	27.58
1863	27.57
1864	27.56
1865	27.54
1866	27.53
1867	27.52
1868	27.51
1869	27.5
1870	27.49
1871	27.55
1872	27.61
1873	27.66
1874	27.72
1875	27.78
1876	27.84
1877	27.9
1878	27.96
1879	28.01
1880	28.07
1881	28.13
1882	28.19
1883	28.24
1884	28.3
1885	28.36
1886	28.42
1887	28.48
1888	28.53
1889	28.59
1890	28.65
1891	28.71
1892	28.76
1893	28.82
1894	28.88
1895	28.93
1896	28.99
1897	29.05
1898	29.11
1899	29.16
1900	29.22
1901	29.28
1902	29.33
1903	29.39
1904	29.45
1905	29.5
1906	29.55
1907	29.61
1908	29.66
1909	29.72
1910	29.77
1911	29.83
1912	29.89
1913	29.94
1914	30
1915	30.06
1916	30.11
1917	30.17
1918	7.89
1919	30.28
1920	30.34
1921	30.39
1922	30.45
1923	30.5
1924	30.56
1925	30.61
1926	30.67
1927	30.73
1928	30.78
1929	30.84
1930	30.89
1931	30.95
1932	31
1933	31.06
1934	31.11
1935	31.17
1936	31.22
1937	31.28
1938	31.33
1939	31.39
1940	31.44
1941	31.5
1942	31.55
1943	31.61
1944	31.66
1945	31.72
1946	31.76
1947	31.81
1948	31.87
1949	31.92
1950	31.98
1951	32.36
1952	33.05
1953	33.73
1954	34.43
1955	35.13
1956	35.82
1957	36.53
1958	37.23
1959	37.94
1960	38.65
1961	39.36
1962	40.07
1963	40.78
1964	41.51
1965	42.22
1966	42.94
1967	43.66
1968	44.37
1969	45.08
1970	45.78
1971	45.89
1972	45.89
1973	45.98
1974	46.09
1975	46.26
1976	46.46
1977	46.6
1978	45.02
1979	43.57
1980	43.26
1981	44.06
1982	43.75
1983	42.02
1984	39.77
1985	41.61
1986	42.58
1987	44.7
1988	46.97
1989	50.78
1990	51.61
1991	51.29
1992	51.42
1993	51.35
1994	50.71
1995	51.07
1996	51.4
1997	51.13
1998	50.12
1999	51.54
2000	51.63
2001	51.69
2002	52.43
2003	53.03
2004	53.5
2005	53.87
2006	54.15
2007	54.57
2008	55.21
2009	55.69
2010	56.2
2011	56.71
2012	57.23
2013	57.71
2014	57.83
2015	57.9
2016	58.02
2017	58.36
2018	58.69