Year Total
1801 0.1711
1802 0.1711
1803 0.1711
1804 0.1711
1805 0.1711
1806 0.1711
1807 0.1711
1808 0.1711
1809 0.1711
1810 0.1711
1811 0.1711
1812 0.1711
1813 0.1711
1814 0.1711
1815 0.1711
1816 0.1711
1817 0.1711
1818 0.1711
1819 0.1711
1820 0.1711
1821 0.3287
1822 0.3287
1823 0.3287
1824 0.3287
1825 0.3287
1826 0.3287
1827 0.3287
1828 0.3287
1829 0.3287
1830 0.3287
1831 0.3287
1832 0.3287
1833 0.3287
1834 0.3287
1835 0.3287
1836 0.3287
1837 0.3287
1838 0.3287
1839 0.3287
1840 0.3287
1841 0.3287
1842 0.3287
1843 0.3287
1844 0.3287
1845 0.3287
1846 0.3287
1847 0.3287
1848 0.3287
1849 0.3287
1850 0.3287
1851 0.3306
1852 0.3306
1853 0.3306
1854 0.3306
1855 0.3306
1856 0.3306
1857 0.3306
1858 0.3306
1859 0.3306
1860 0.3306
1861 0.3306
1862 0.3306
1863 0.3306
1864 0.3306
1865 0.3306
1866 0.3306
1867 0.3306
1868 0.3306
1869 0.3306
1870 0.3306
1871 0.7388
1872 0.7388
1873 0.7388
1874 0.7388
1875 0.7388
1876 0.7388
1877 0.7388
1878 0.7388
1879 0.7388
1880 0.7388
1881 0.7388
1882 0.7388
1883 0.7388
1884 0.7388
1885 3.467
1886 -2.854
1887 4.896
1888 1.243
1889 -2.402
1890 4.992
1891 -8.894
1892 8.39
1893 2.875
1894 1.873
1895 -2.134
1896 -7.064
1897 18.67
1898 0.5391
1899 -7.48
1900 3.854
1901 1.957
1902 8.232
1903 1.316
1904 0.3677
1905 -1.915
1906 2.751
1907 -6.15
1908 1.333
1909 13.63
1910 0.06995
1911 -0.34
1912 0.213
1913 -1.852
1914 6.226
1915 -1.718
1916 3.665
1917 -1.095
1918 -12.15
1919 14.65
1920 -7.248
1921 7.878
1922 4.028
1923 -3.454
1924 4.698
1925 0.9955
1926 2.937
1927 -0.1584
1928 0.8185
1929 3.938
1930 1.477
1931 -0.261
1932 1.486
1933 0.443
1934 1.303
1935 -0.5904
1936 4.254
1937 -1.279
1938 0.6091
1939 2.574
1940 3.685
1941 2.422
1942 1.35
1943 5.852
1944 0.7525
1945 0.1762
1946 -3.532
1947 2.825
1948 3.419
1949 4.764
1950 -1.34
1951 -3.995
1952 -0.2686
1953 8.973
1954 1.808
1955 1.878
1956 2.566
1957 4.025
1958 1.092
1959 0.8116
1960 4.656
1961 5.847
1962 7.047
1963 6.108
1964 7.42
1965 4.356
1966 8.078
1967 3.715
1968 6.984
1969 6.496
1970 10.42
1971 0.5448
1972 0.8883
1973 7.407
1974 3.847
1975 4.726
1976 6.105
1977 4.985
1978 8.983
1979 4.134
1980 10.37
1981 7.631
1982 7.635
1983 7.369
1984 4.972
1985 9.532
1986 6.732
1987 6.089
1988 6.657
1989 5.05
1990 4.818
1991 5.568
1992 7.93
1993 2.298
1994 3.84
1995 5.013
1996 4.823
1997 1.118
1998 2.656
1999 3.681
2000 2.969
2001 1.238
2002 3.107
2003 4.735
2004 7.31
2005 7.449
2006 5.762
2007 6.829
2008 3.738
2009 -0.8641
2010 2.77
2011 2.766
2012 4.113
2013 3.361