Year	Total
1801	0
1802	0
1803	0
1804	0
1805	0
1806	0
1807	0
1808	0
1809	0
1810	0
1811	0
1812	0
1813	0
1814	0
1815	0
1816	0
1817	0
1818	0
1819	0
1820	0
1821	0.6663
1822	0.6662
1823	0.6661
1824	0.666
1825	0.6658
1826	0.6657
1827	0.6666
1828	0.6664
1829	0.6652
1830	0.666
1831	0.6669
1832	0.6656
1833	0.6664
1834	0.6652
1835	0.666
1836	0.6667
1837	0.6654
1838	0.6662
1839	0.6659
1840	0.6666
1841	0.6663
1842	0.666
1843	0.6657
1844	0.6663
1845	0.666
1846	0.6656
1847	0.6663
1848	0.6659
1849	0.6665
1850	0.6651
1851	0.6667
1852	0.6662
1853	0.6658
1854	0.6663
1855	0.6659
1856	0.6655
1857	0.6659
1858	0.6664
1859	0.6659
1860	0.6664
1861	0.6659
1862	0.6663
1863	0.6658
1864	0.6662
1865	0.6657
1866	0.666
1867	0.6664
1868	0.6658
1869	0.6661
1870	0.6656
1871	0.6667
1872	0.6662
1873	0.6656
1874	0.6658
1875	0.6661
1876	0.6663
1877	0.6657
1878	0.6667
1879	0.6661
1880	0.6654
1881	0.6665
1882	0.6658
1883	0.6659
1884	0.6661
1885	0.6662
1886	0.6663
1887	0.6656
1888	0.6665
1889	0.6658
1890	0.6658
1891	0.6659
1892	0.666
1893	0.666
1894	0.6668
1895	0.666
1896	0.666
1897	0.666
1898	0.666
1899	0.666
1900	0.6659
1901	0.6659
1902	0.6665
1903	0.6657
1904	0.6664
1905	0.6655
1906	0.6662
1907	0.666
1908	0.6659
1909	0.6665
1910	0.6656
1911	0.6662
1912	0.666
1913	0.6658
1914	0.6663
1915	0.6661
1916	0.6659
1917	0.6657
1918	0.6662
1919	0.6659
1920	0.6664
1921	0.6661
1922	0.6658
1923	0.6662
1924	0.6659
1925	0.6663
1926	0.666
1927	0.6657
1928	0.6667
1929	0.6656
1930	0.666
1931	0.6662
1932	0.6659
1933	0.6661
1934	0.6658
1935	0.6666
1936	0.6656
1937	0.6665
1938	0.666
1939	0.6656
1940	0.6664
1941	0.6659
1942	0.6661
1943	0.6656
1944	0.6664
1945	0.6659
1946	0.666
1947	0.6661
1948	0.6662
1949	0.6657
1950	0.6663
1951	4.625
1952	4.421
1953	4.25
1954	4.107
1955	3.989
1956	3.894
1957	3.818
1958	3.762
1959	3.723
1960	3.701
1961	3.697
1962	3.711
1963	3.748
1964	3.805
1965	3.88
1966	3.947
1967	4.021
1968	4.143
1969	4.32
1970	4.52
1971	2.714
1972	1.209
1973	1.511
1974	5.197
1975	-3.26
1976	9.021
1977	7.959
1978	7.187
1979	4.847
1980	5.068
1981	11.5
1982	2.313
1983	8.152
1984	6.271
1985	5.755
1986	14.19
1987	31.33
1988	6.046
1989	7.587
1990	11.38
1991	0.7704
1992	3.731
1993	2.081
1994	5.938
1995	6.802
1996	6.399
1997	5.832
1998	6.102
1999	7.941
2000	7.723
2001	7.299
2002	10.17
2003	7.795
2004	7.095
2005	6.913
2006	6.849
2007	17.93
2008	4.669
2009	6.728
2010	11.68
2011	8.512
2012	7.513
2013	6.401