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 1.888
1822 1.888
1823 1.888
1824 1.888
1825 1.888
1826 1.888
1827 1.888
1828 1.888
1829 1.888
1830 1.888
1831 1.888
1832 1.888
1833 1.888
1834 1.888
1835 1.888
1836 1.888
1837 1.888
1838 1.888
1839 1.888
1840 1.888
1841 1.888
1842 1.888
1843 1.888
1844 1.888
1845 1.888
1846 1.888
1847 1.888
1848 1.888
1849 1.888
1850 1.888
1851 2.042
1852 2.042
1853 2.042
1854 2.042
1855 2.042
1856 2.042
1857 2.042
1858 2.042
1859 2.042
1860 2.042
1861 2.042
1862 2.042
1863 2.042
1864 2.042
1865 2.042
1866 2.042
1867 2.042
1868 2.042
1869 2.042
1870 2.042
1871 2.04
1872 2.04
1873 2.04
1874 2.04
1875 2.04
1876 2.04
1877 2.04
1878 2.04
1879 2.04
1880 2.04
1881 2.04
1882 2.04
1883 2.04
1884 2.04
1885 2.04
1886 2.04
1887 2.04
1888 2.04
1889 2.039
1890 2.04
1891 2.04
1892 2.04
1893 2.04
1894 2.04
1895 2.04
1896 2.04
1897 2.04
1898 2.04
1899 2.04
1900 2.04
1901 2.497
1902 2.539
1903 2.516
1904 2.494
1905 2.533
1906 2.511
1907 2.489
1908 2.526
1909 2.503
1910 2.538
1911 2.515
1912 2.493
1913 2.526
1914 2.717
1915 2.689
1916 2.713
1917 2.684
1918 2.707
1919 2.679
1920 2.7
1921 2.339
1922 2.369
1923 2.304
1924 2.379
1925 2.316
1926 2.344
1927 2.326
1928 2.353
1929 2.335
1930 2.36
1931 2.301
1932 2.325
1933 2.308
1934 2.292
1935 2.315
1936 2.299
1937 2.282
1938 2.305
1939 2.288
1940 2.309
1941 2.293
1942 2.24
1943 2.297
1944 2.281
1945 2.265
1946 0.85
1947 1.686
1948 0.9882
1949 1.073
1950 5.694
1951 1.515
1952 5.692
1953 -3.167
1954 8.184
1955 -4.024
1956 8.699
1957 -5.974
1958 7.88
1959 -4.765
1960 6.391
1961 -4.129
1962 9.486
1963 -6.625
1964 -2.416
1965 0.9426
1966 -0.7388
1967 -2.172
1968 3.784
1969 3.035
1970 4.403
1971 7.281
1972 4.344
1973 5.3
1974 7.193
1975 -1.396
1976 9.706
1977 1.593
1978 6.028
1979 8.623
1980 9.174
1981 -2.039
1982 -2.819
1983 1.264
1984 0.663
1985 0.4522
1986 0.02539
1987 -0.6813
1988 0.8011
1989 1.077
1990 -0.00376
1991 0.5288
1992 -13.41
1993 -2.028
1994 -8.102
1995 5.202
1996 4.287
1997 2.876
1998 2.283
1999 2.697
2000 0.7353
2001 -1.384
2002 -0.9741
2003 -0.06383
2004 -4.148
2005 1.01
2006 2.011
2007 3.042
2008 0.5151
2009 2.535
2010 -3.518
2011 5.285
2012 2.782
2013 4.176