Year	Total
1800	7.13
1801	7.13
1802	7.13
1803	7.13
1804	7.13
1805	7.13
1806	7.13
1807	7.13
1808	7.13
1809	7.13
1810	7.13
1811	7.13
1812	7.13
1813	7.13
1814	7.13
1815	7.13
1816	7.13
1817	7.13
1818	7.13
1819	7.13
1820	7.13
1821	7.13
1822	7.13
1823	7.13
1824	7.13
1825	7.13
1826	7.13
1827	7.13
1828	7.13
1829	7.13
1830	7.13
1831	7.13
1832	7.13
1833	7.13
1834	7.13
1835	7.13
1836	7.13
1837	7.13
1838	7.13
1839	7.13
1840	7.13
1841	7.13
1842	7.13
1843	7.13
1844	7.13
1845	7.13
1846	7.13
1847	7.13
1848	7.13
1849	7.13
1850	7.13
1851	7.13
1852	7.13
1853	7.13
1854	7.13
1855	7.13
1856	7.13
1857	7.13
1858	7.13
1859	7.13
1860	7.13
1861	7.13
1862	7.13
1863	7.13
1864	7.13
1865	7.13
1866	7.13
1867	7.13
1868	7.13
1869	7.13
1870	7.13
1871	7.13
1872	7.13
1873	7.13
1874	7.13
1875	7.13
1876	7.13
1877	7.13
1878	7.13
1879	7.13
1880	7.13
1881	7.13
1882	7.13
1883	7.13
1884	7.13
1885	7.13
1886	7.13
1887	7.13
1888	7.13
1889	7.13
1890	7.13
1891	7.13
1892	7.13
1893	7.13
1894	7.13
1895	7.13
1896	7.13
1897	7.13
1898	7.13
1899	7.13
1900	7.13
1901	7.13
1902	7.13
1903	7.13
1904	7.13
1905	7.13
1906	7.13
1907	7.13
1908	7.13
1909	7.13
1910	7.13
1911	7.13
1912	7.13
1913	7.13
1914	7.13
1915	7.13
1916	7.13
1917	7.13
1918	7.13
1919	7.13
1920	7.13
1921	7.13
1922	7.13
1923	7.13
1924	7.13
1925	7.13
1926	7.17
1927	7.21
1928	7.25
1929	7.29
1930	7.33
1931	7.37
1932	7.41
1933	7.45
1934	7.48
1935	7.52
1936	7.56
1937	7.6
1938	7.64
1939	7.68
1940	7.72
1941	7.76
1942	7.8
1943	7.84
1944	7.88
1945	7.91
1946	7.95
1947	7.99
1948	8.03
1949	8.07
1950	8.11
1951	7.88
1952	7.44
1953	7.07
1954	6.76
1955	6.52
1956	6.34
1957	6.23
1958	6.18
1959	6.19
1960	6.25
1961	6.36
1962	6.51
1963	6.69
1964	6.87
1965	7.04
1966	7.19
1967	7.3
1968	7.36
1969	7.38
1970	7.36
1971	7.31
1972	7.23
1973	7.15
1974	7.07
1975	6.99
1976	6.92
1977	6.83
1978	6.75
1979	6.66
1980	6.57
1981	6.49
1982	6.41
1983	6.34
1984	6.28
1985	6.22
1986	6.16
1987	6.11
1988	6.04
1989	5.97
1990	5.88
1991	5.79
1992	5.7
1993	5.61
1994	5.52
1995	5.42
1996	5.33
1997	5.22
1998	5.11
1999	5
2000	4.89
2001	4.8
2002	4.71
2003	4.64
2004	4.59
2005	4.56
2006	4.55
2007	4.55
2008	4.55
2009	4.56
2010	4.56
2011	4.56
2012	4.54
2013	4.52
2014	4.48
2015	4.43
2016	4.37
2017	4.31
2018	4.25