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 1.076
1822 1.076
1823 1.077
1824 1.076
1825 1.076
1826 1.076
1827 1.076
1828 1.076
1829 1.076
1830 1.076
1831 1.076
1832 1.076
1833 1.076
1834 1.076
1835 1.076
1836 1.076
1837 1.077
1838 1.076
1839 1.076
1840 1.076
1841 1.076
1842 1.076
1843 1.076
1844 1.076
1845 1.076
1846 1.076
1847 1.076
1848 1.076
1849 1.076
1850 1.076
1851 1.076
1852 1.076
1853 1.076
1854 1.076
1855 1.076
1856 1.076
1857 1.076
1858 1.076
1859 1.077
1860 1.076
1861 1.076
1862 1.077
1863 1.076
1864 1.076
1865 1.077
1866 1.076
1867 1.077
1868 1.076
1869 1.076
1870 1.077
1871 1.076
1872 1.076
1873 1.076
1874 1.076
1875 1.077
1876 1.076
1877 1.076
1878 1.076
1879 1.076
1880 1.076
1881 1.076
1882 1.076
1883 1.076
1884 1.077
1885 1.076
1886 1.076
1887 1.076
1888 1.076
1889 1.076
1890 1.076
1891 1.076
1892 1.076
1893 1.076
1894 1.076
1895 1.076
1896 1.076
1897 1.076
1898 1.076
1899 1.076
1900 1.076
1901 1.076
1902 1.076
1903 1.076
1904 1.076
1905 1.076
1906 1.076
1907 1.076
1908 1.076
1909 1.076
1910 1.076
1911 1.076
1912 1.076
1913 1.076
1914 1.076
1915 1.076
1916 1.076
1917 1.076
1918 1.076
1919 1.076
1920 1.076
1921 1.076
1922 1.076
1923 1.076
1924 1.076
1925 1.076
1926 1.076
1927 1.076
1928 1.076
1929 1.076
1930 1.076
1931 1.076
1932 1.076
1933 1.076
1934 1.076
1935 1.076
1936 1.076
1937 1.076
1938 1.076
1939 1.076
1940 1.076
1941 1.076
1942 1.076
1943 1.076
1944 1.076
1945 1.076
1946 1.076
1947 1.076
1948 1.076
1949 1.076
1950 1.076
1951 5.981
1952 2.912
1953 3.372
1954 5.607
1955 3.071
1956 3.528
1957 3.327
1958 2.759
1959 5.489
1960 3.9
1961 6.25
1962 7.048
1963 -5.7
1964 6.206
1965 6.624
1966 2
1967 3.054
1968 2.889
1969 2.579
1970 2.798
1971 2.085
1972 0.7974
1973 2.881
1974 5.324
1975 2.457
1976 7.885
1977 0.4228
1978 0.9311
1979 -1.226
1980 2.389
1981 0.02721
1982 1.723
1983 1.385
1984 0.6799
1985 -0.5565
1986 1.668
1987 3.017
1988 6.167
1989 5.059
1990 3.458
1991 0.9491
1992 5.873
1993 8.302
1994 6.237
1995 5.67
1996 4.791
1997 6.048
1998 4.883
1999 2.835
2000 1.069
2001 4.683
2002 2.741
2003 0.4107
2004 2
2005 2.637
2006 2.198
2007 1.466
2008 4.641
2009 -0.6554
2010 1.695
2011 3.814
2012 3.847
2013 2.652