Year	Total
1800	5.97
1801	5.97
1802	5.96
1803	5.96
1804	5.96
1805	5.95
1806	5.95
1807	5.95
1808	5.94
1809	5.94
1810	5.94
1811	5.93
1812	5.93
1813	5.93
1814	5.92
1815	5.92
1816	5.92
1817	5.91
1818	5.91
1819	5.91
1820	5.9
1821	5.9
1822	5.9
1823	5.89
1824	5.89
1825	5.89
1826	5.88
1827	5.88
1828	5.87
1829	5.87
1830	5.87
1831	5.86
1832	5.86
1833	5.86
1834	5.85
1835	5.85
1836	5.85
1837	5.84
1838	5.84
1839	5.84
1840	5.83
1841	5.83
1842	5.83
1843	5.82
1844	5.82
1845	5.82
1846	5.81
1847	5.81
1848	5.81
1849	5.8
1850	5.8
1851	5.8
1852	5.8
1853	5.8
1854	5.8
1855	5.79
1856	5.79
1857	5.79
1858	5.79
1859	5.79
1860	5.79
1861	5.79
1862	5.79
1863	5.78
1864	5.78
1865	5.78
1866	5.78
1867	5.78
1868	5.78
1869	5.78
1870	5.78
1871	5.78
1872	5.77
1873	5.77
1874	5.77
1875	5.77
1876	5.77
1877	5.77
1878	5.77
1879	5.77
1880	5.76
1881	5.76
1882	5.76
1883	5.71
1884	5.21
1885	5.45
1886	5.56
1887	5.64
1888	5.63
1889	5.57
1890	5.45
1891	5.44
1892	5.31
1893	5.04
1894	5.11
1895	5.25
1896	5.07
1897	4.3
1898	4.5
1899	4.6
1900	4.5
1901	4.41
1902	4.31
1903	4.34
1904	4.37
1905	4.4
1906	4.42
1907	4.45
1908	4.43
1909	4.41
1910	4.38
1911	4.36
1912	4.34
1913	4.22
1914	4.1
1915	3.98
1916	3.86
1917	3.74
1918	3.69
1919	3.64
1920	3.59
1921	3.53
1922	3.48
1923	3.45
1924	3.43
1925	3.4
1926	3.37
1927	3.34
1928	3.27
1929	3.2
1930	3.13
1931	3.06
1932	2.99
1933	2.93
1934	2.86
1935	2.8
1936	2.74
1937	2.68
1938	2.68
1939	2.68
1940	2.68
1941	2.68
1942	2.68
1943	2.68
1944	2.68
1945	2.68
1946	2.69
1947	2.69
1948	2.69
1949	2.69
1950	2.69
1951	2.7
1952	2.72
1953	2.74
1954	2.76
1955	2.78
1956	2.8
1957	2.83
1958	2.85
1959	2.87
1960	2.88
1961	2.89
1962	2.88
1963	2.87
1964	2.86
1965	2.84
1966	2.83
1967	2.83
1968	2.84
1969	2.87
1970	2.9
1971	2.94
1972	2.97
1973	2.99
1974	3
1975	2.98
1976	2.95
1977	2.91
1978	2.85
1979	2.79
1980	2.73
1981	2.67
1982	2.62
1983	2.57
1984	2.55
1985	2.53
1986	2.52
1987	2.52
1988	2.53
1989	2.53
1990	2.52
1991	2.51
1992	2.49
1993	2.47
1994	2.44
1995	2.4
1996	2.36
1997	2.33
1998	2.29
1999	2.27
2000	2.24
2001	2.22
2002	2.21
2003	2.19
2004	2.17
2005	2.16
2006	2.14
2007	2.13
2008	2.11
2009	2.09
2010	2.08
2011	2.06
2012	2.05
2013	2.03
2014	2.02
2015	2.01
2016	2
2017	1.98
2018	1.97