Year	Total
1800	6
1801	5.99
1802	5.97
1803	5.96
1804	5.95
1805	5.94
1806	5.92
1807	5.91
1808	5.9
1809	5.88
1810	5.87
1811	5.86
1812	5.84
1813	5.83
1814	5.82
1815	5.81
1816	5.79
1817	5.78
1818	5.77
1819	5.75
1820	5.74
1821	5.73
1822	5.72
1823	5.7
1824	5.69
1825	5.68
1826	5.66
1827	5.65
1828	5.64
1829	5.62
1830	5.61
1831	5.6
1832	5.59
1833	5.57
1834	5.56
1835	5.55
1836	5.53
1837	5.52
1838	5.51
1839	5.5
1840	5.48
1841	5.47
1842	5.46
1843	5.44
1844	5.43
1845	5.42
1846	5.4
1847	5.39
1848	5.38
1849	5.37
1850	5.35
1851	5.34
1852	5.33
1853	5.31
1854	5.3
1855	5.29
1856	5.28
1857	5.26
1858	5.25
1859	5.24
1860	5.22
1861	5.21
1862	5.2
1863	5.18
1864	5.17
1865	5.16
1866	5.15
1867	5.13
1868	5.12
1869	5.11
1870	5.09
1871	5.08
1872	5.07
1873	5.05
1874	5.04
1875	5.03
1876	5.02
1877	5
1878	4.99
1879	4.98
1880	4.96
1881	4.95
1882	4.94
1883	4.93
1884	4.91
1885	4.9
1886	4.89
1887	4.87
1888	4.86
1889	4.85
1890	4.83
1891	4.82
1892	4.81
1893	4.8
1894	4.78
1895	4.77
1896	4.76
1897	4.74
1898	4.73
1899	4.72
1900	4.71
1901	4.69
1902	4.68
1903	4.67
1904	4.65
1905	4.64
1906	4.63
1907	4.61
1908	4.6
1909	4.59
1910	4.58
1911	4.56
1912	4.55
1913	4.54
1914	4.52
1915	4.51
1916	4.5
1917	4.49
1918	4.47
1919	4.46
1920	4.45
1921	4.43
1922	4.42
1923	4.41
1924	4.39
1925	4.38
1926	4.39
1927	4.4
1928	4.41
1929	4.41
1930	4.42
1931	4.36
1932	4.3
1933	4.25
1934	4.19
1935	4.13
1936	3.93
1937	3.74
1938	3.54
1939	3.34
1940	3.15
1941	3.32
1942	3.49
1943	3.66
1944	3.84
1945	4.01
1946	4.11
1947	4.21
1948	4.32
1949	4.42
1950	4.52
1951	4.45
1952	4.32
1953	4.21
1954	4.11
1955	4.03
1956	3.96
1957	3.92
1958	3.88
1959	3.86
1960	3.84
1961	3.84
1962	3.83
1963	3.82
1964	3.82
1965	3.81
1966	3.8
1967	3.8
1968	3.81
1969	3.81
1970	3.82
1971	3.81
1972	3.8
1973	3.77
1974	3.72
1975	3.66
1976	3.59
1977	3.51
1978	3.43
1979	3.35
1980	3.28
1981	3.22
1982	3.17
1983	3.13
1984	3.11
1985	3.09
1986	3.07
1987	3.06
1988	3.04
1989	3.02
1990	3
1991	2.97
1992	2.95
1993	2.94
1994	2.93
1995	2.92
1996	2.92
1997	2.92
1998	2.92
1999	2.92
2000	2.92
2001	2.92
2002	2.91
2003	2.91
2004	2.91
2005	2.91
2006	2.92
2007	2.93
2008	2.95
2009	2.97
2010	3
2011	3.01
2012	3.03
2013	3.03
2014	3.02
2015	3
2016	2.97
2017	2.95
2018	2.92