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 1.423
1822 1.422
1823 1.422
1824 1.422
1825 1.422
1826 1.422
1827 1.422
1828 1.423
1829 1.422
1830 1.423
1831 1.422
1832 1.423
1833 1.422
1834 1.422
1835 1.423
1836 1.423
1837 1.421
1838 1.422
1839 1.423
1840 1.422
1841 1.422
1842 1.422
1843 1.423
1844 1.422
1845 1.423
1846 1.422
1847 1.422
1848 1.422
1849 1.422
1850 1.422
1851 1.422
1852 1.423
1853 1.422
1854 1.422
1855 1.422
1856 1.421
1857 1.422
1858 1.422
1859 1.422
1860 1.422
1861 1.423
1862 1.422
1863 1.422
1864 1.423
1865 1.422
1866 1.422
1867 1.423
1868 1.422
1869 1.422
1870 1.422
1871 1.422
1872 1.422
1873 1.422
1874 1.422
1875 1.423
1876 1.422
1877 1.422
1878 1.422
1879 1.422
1880 1.423
1881 1.422
1882 1.422
1883 1.423
1884 1.422
1885 1.422
1886 1.423
1887 1.422
1888 1.422
1889 1.423
1890 1.421
1891 1.422
1892 1.423
1893 1.422
1894 1.423
1895 1.422
1896 1.423
1897 1.422
1898 1.422
1899 1.422
1900 1.422
1901 1.422
1902 1.422
1903 1.422
1904 1.422
1905 1.422
1906 1.422
1907 1.422
1908 1.422
1909 1.422
1910 1.422
1911 1.422
1912 1.422
1913 1.423
1914 2.257
1915 2.257
1916 2.257
1917 2.257
1918 2.257
1919 2.257
1920 2.257
1921 2.257
1922 2.257
1923 2.257
1924 2.257
1925 2.257
1926 2.257
1927 2.257
1928 2.257
1929 2.257
1930 2.257
1931 2.257
1932 2.257
1933 2.257
1934 2.257
1935 2.257
1936 2.257
1937 2.257
1938 2.257
1939 2.257
1940 2.257
1941 2.257
1942 2.257
1943 2.257
1944 2.257
1945 2.257
1946 2.257
1947 2.257
1948 2.257
1949 2.257
1950 2.257
1951 5.849
1952 5.402
1953 5.183
1954 5.122
1955 5.158
1956 5.235
1957 5.31
1958 5.346
1959 5.323
1960 5.241
1961 5.127
1962 5.023
1963 4.971
1964 4.989
1965 5.025
1966 5.118
1967 5.125
1968 4.861
1969 4.267
1970 3.481
1971 6.318
1972 4.505
1973 3.823
1974 2.644
1975 -9.727
1976 9.634
1977 11.19
1978 6.302
1979 -5.412
1980 -8.577
1981 6.444
1982 -5.229
1983 -5.133
1984 -2.891
1985 13.34
1986 -1.703
1987 -6.902
1988 9.521
1989 5.459
1990 -3.093
1991 3.214
1992 1.614
1993 -4.592
1994 -2.698
1995 3.387
1996 1.587
1997 2.628
1998 3.438
1999 -2.041
2000 4.47
2001 6.498
2002 3.262
2003 7.658
2004 8.145
2005 6.435
2006 5.745
2007 4.997
2008 3.716
2009 2.567
2010 3.687
2011 4.261
2012 5.399
2013 4.512