Year	Total
1800	7.8
1801	7.8
1802	7.8
1803	7.8
1804	7.8
1805	7.8
1806	7.8
1807	7.8
1808	7.8
1809	7.8
1810	7.8
1811	7.8
1812	7.8
1813	7.8
1814	7.8
1815	7.8
1816	7.8
1817	7.8
1818	7.8
1819	7.8
1820	7.8
1821	7.8
1822	7.8
1823	7.8
1824	7.8
1825	7.8
1826	7.8
1827	7.8
1828	7.8
1829	7.8
1830	7.8
1831	7.8
1832	7.8
1833	7.8
1834	7.8
1835	7.8
1836	7.8
1837	7.8
1838	7.8
1839	7.8
1840	7.8
1841	7.8
1842	7.8
1843	7.8
1844	7.8
1845	7.8
1846	7.8
1847	7.8
1848	7.8
1849	7.8
1850	7.8
1851	7.8
1852	7.8
1853	7.8
1854	7.8
1855	7.8
1856	7.8
1857	7.8
1858	7.8
1859	7.8
1860	7.8
1861	7.8
1862	7.8
1863	7.8
1864	7.8
1865	7.8
1866	7.8
1867	7.8
1868	7.8
1869	7.8
1870	7.8
1871	7.8
1872	7.8
1873	7.8
1874	7.8
1875	7.8
1876	7.8
1877	7.8
1878	7.8
1879	7.8
1880	7.8
1881	7.8
1882	7.8
1883	7.8
1884	7.8
1885	7.8
1886	7.8
1887	7.8
1888	7.8
1889	7.8
1890	7.8
1891	7.8
1892	7.8
1893	7.8
1894	7.8
1895	7.8
1896	7.8
1897	7.8
1898	7.8
1899	7.8
1900	7.8
1901	7.72
1902	7.65
1903	7.57
1904	7.49
1905	7.42
1906	7.34
1907	7.26
1908	7.19
1909	7.11
1910	7.03
1911	6.96
1912	6.88
1913	6.8
1914	6.73
1915	6.65
1916	6.57
1917	6.5
1918	6.42
1919	6.34
1920	6.27
1921	6.19
1922	6.11
1923	6.04
1924	5.96
1925	5.88
1926	5.81
1927	5.73
1928	5.65
1929	5.58
1930	5.5
1931	5.32
1932	5.13
1933	4.95
1934	4.77
1935	4.59
1936	4.4
1937	4.22
1938	4.04
1939	3.85
1940	3.67
1941	3.61
1942	3.56
1943	3.5
1944	3.44
1945	3.39
1946	3.33
1947	3.27
1948	3.21
1949	3.16
1950	3.1
1951	3.04
1952	2.97
1953	2.92
1954	2.9
1955	2.89
1956	2.9
1957	2.91
1958	2.93
1959	2.94
1960	2.94
1961	2.94
1962	2.94
1963	2.92
1964	2.91
1965	2.88
1966	2.85
1967	2.82
1968	2.79
1969	2.75
1970	2.71
1971	2.67
1972	2.62
1973	2.58
1974	2.53
1975	2.49
1976	2.45
1977	2.41
1978	2.37
1979	2.34
1980	2.31
1981	2.3
1982	2.28
1983	2.28
1984	2.28
1985	2.27
1986	2.27
1987	2.26
1988	2.24
1989	2.22
1990	2.18
1991	2.13
1992	2.08
1993	2.01
1994	1.95
1995	1.88
1996	1.81
1997	1.75
1998	1.69
1999	1.64
2000	1.61
2001	1.59
2002	1.59
2003	1.6
2004	1.63
2005	1.66
2006	1.71
2007	1.77
2008	1.82
2009	1.87
2010	1.92
2011	1.95
2012	1.98
2013	2
2014	2
2015	2
2016	2
2017	1.99
2018	1.98