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	0.7381
1822	0.7343
1823	0.738
1824	0.7379
1825	0.7378
1826	0.7378
1827	0.7341
1828	0.7377
1829	0.7376
1830	0.7375
1831	0.7375
1832	0.7374
1833	0.7374
1834	0.7373
1835	0.7373
1836	0.7372
1837	0.7371
1838	0.7371
1839	0.737
1840	0.737
1841	0.7369
1842	0.7369
1843	0.7368
1844	0.7367
1845	0.7367
1846	0.7366
1847	0.7366
1848	0.7365
1849	0.7401
1850	0.7364
1851	0.7363
1852	2.933
1853	2.932
1854	2.933
1855	2.93
1856	2.933
1857	2.931
1858	2.934
1859	2.93
1860	2.934
1861	2.931
1862	1.757
1863	1.756
1864	1.756
1865	1.755
1866	1.757
1867	1.756
1868	1.755
1869	1.757
1870	1.755
1871	1.757
1872	1.882
1873	1.882
1874	1.883
1875	1.883
1876	1.883
1877	1.881
1878	1.883
1879	1.882
1880	1.882
1881	1.883
1882	1.542
1883	1.538
1884	1.542
1885	1.539
1886	1.542
1887	1.539
1888	1.54
1889	1.541
1890	1.54
1891	1.541
1892	1.854
1893	1.852
1894	1.853
1895	1.855
1896	1.853
1897	1.853
1898	1.853
1899	1.854
1900	1.854
1901	1.853
1902	1.028
1903	1.027
1904	1.027
1905	1.028
1906	1.028
1907	1.027
1908	1.027
1909	1.028
1910	1.028
1911	1.027
1912	0.1089
1913	0.1077
1914	3.028
1915	3.027
1916	3.028
1917	3.028
1918	3.029
1919	3.028
1920	3.028
1921	3.027
1922	4.891
1923	4.888
1924	4.892
1925	4.889
1926	4.89
1927	4.89
1928	4.891
1929	4.891
1930	4.889
1931	4.89
1932	4.811
1933	4.81
1934	4.81
1935	4.811
1936	4.811
1937	4.81
1938	4.811
1939	1.171
1940	1.172
1941	1.171
1942	1.172
1943	1.172
1944	1.968
1945	1.969
1946	1.968
1947	1.97
1948	1.968
1949	1.968
1950	1.969
1951	9.306
1952	10.04
1953	10.66
1954	11.2
1955	11.67
1956	12.08
1957	12.45
1958	12.79
1959	13.11
1960	13.39
1961	10.62
1962	10.4
1963	10.48
1964	10.47
1965	10.4
1966	9.066
1967	9.603
1968	8.438
1969	9.006
1970	-5.621
1971	1.65
1972	-3.444
1973	7.623
1974	-16.72
1975	-14.75
1976	5.233
1977	9.182
1978	14.24
1979	26.18
1980	6.545
1981	-2.831
1982	6.363
1983	6.87
1984	2.437
1985	4.144
1986	2.613
1987	3.689
1988	2.223
1989	2.262
1990	-1.654
1991	-4.229
1992	-3.892
1993	0.2184
1994	2.992
1995	4.135
1996	3.89
1997	4.543
1998	6.389
1999	3.691
2000	1.718
2001	0.7571
2002	2.336
2003	1.144
2004	1.475
2005	2.687
2006	2.766
2007	1.719
2008	-2.053
2009	-4.618
2010	0.3955
2011	1.767
2012	1.896
2013	1.885