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	2.399
1822	2.403
1823	2.406
1824	2.408
1825	2.409
1826	2.41
1827	2.367
1828	2.408
1829	2.406
1830	2.403
1831	2.399
1832	2.432
1833	2.389
1834	2.383
1835	2.413
1836	2.405
1837	2.396
1838	2.421
1839	2.378
1840	2.433
1841	2.389
1842	2.409
1843	2.397
1844	2.414
1845	2.4
1846	2.386
1847	2.4
1848	2.412
1849	2.396
1850	2.406
1851	2.415
1852	2.397
1853	2.404
1854	2.386
1855	2.415
1856	2.395
1857	2.398
1858	2.423
1859	2.401
1860	2.402
1861	2.401
1862	2.4
1863	2.397
1864	2.414
1865	2.391
1866	2.405
1867	2.4
1868	2.411
1869	2.404
1870	2.396
1871	3.589
1872	3.585
1873	3.577
1874	3.583
1875	3.585
1876	3.583
1877	3.592
1878	3.584
1879	3.586
1880	3.572
1881	3.593
1882	3.585
1883	3.575
1884	3.584
1885	3.59
1886	3.581
1887	3.59
1888	3.576
1889	3.588
1890	3.587
1891	3.582
1892	3.583
1893	3.581
1894	3.584
1895	3.584
1896	3.588
1897	3.581
1898	3.585
1899	3.586
1900	3.584
1901	3.585
1902	3.583
1903	3.584
1904	3.582
1905	3.588
1906	3.584
1907	3.583
1908	3.584
1909	3.582
1910	3.587
1911	3.583
1912	2.017
1913	2.011
1914	2.018
1915	2.012
1916	2.018
1917	2.011
1918	2.016
1919	2.016
1920	2.012
1921	2.016
1922	1.772
1923	1.77
1924	1.768
1925	1.774
1926	1.768
1927	1.772
1928	1.77
1929	1.773
1930	18.17
1931	18.17
1932	18.79
1933	18.79
1934	18.79
1935	18.79
1936	18.79
1937	18.79
1938	18.79
1939	18.79
1940	18.79
1941	18.79
1942	18.79
1943	18.79
1944	18.79
1945	18.79
1946	18.79
1947	18.79
1948	22.78
1949	22.78
1950	22.78
1951	8.065
1952	7.563
1953	7.209
1954	6.958
1955	6.777
1956	6.64
1957	6.529
1958	6.43
1959	6.333
1960	6.242
1961	6.165
1962	6.115
1963	6.109
1964	6.146
1965	6.207
1966	6.259
1967	6.29
1968	6.324
1969	6.354
1970	6.374
1971	10.53
1972	10.58
1973	10.11
1974	12.11
1975	0.5809
1976	20.36
1977	11.09
1978	6.964
1979	22.68
1980	-6.904
1981	-19.77
1982	4.007
1983	0.5323
1984	0.6104
1985	-1.489
1986	-2.724
1987	1.966
1988	1.054
1989	-1.093
1990	2.73
1991	4.043
1992	-1.088
1993	0.5261
1994	1.819
1995	3.064
1996	3.576
1997	4.095
1998	-0.5679
1999	3.007
2000	2.757
2001	2.603
2002	3.677
2003	2.684
2004	0.2917
2005	0.1837
2006	4.713
2007	0.5822
2008	-1.405
2009	-1.284
2010	2.644
2011	2.439
2012	1.027
2013	-1.112