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 0.8167
1822 0.84
1823 0.8374
1824 0.8348
1825 0.8068
1826 0.8298
1827 0.8524
1828 0.8246
1829 0.8221
1830 0.8197
1831 0.8419
1832 0.8392
1833 0.8122
1834 0.8341
1835 0.8316
1836 0.829
1837 0.8265
1838 0.824
1839 0.8452
1840 0.819
1841 0.84
1842 0.814
1843 0.8348
1844 0.8323
1845 0.8297
1846 0.8272
1847 0.8247
1848 0.8448
1849 0.8196
1850 0.8396
1851 0.8147
1852 0.8345
1853 0.8319
1854 0.8293
1855 0.8268
1856 0.8243
1857 0.8434
1858 0.8193
1859 0.8382
1860 0.8356
1861 0.8119
1862 0.8306
1863 0.828
1864 0.8464
1865 0.8229
1866 0.8205
1867 0.8386
1868 0.836
1869 0.813
1870 0.8309
1871 0.8284
1872 0.8459
1873 0.8233
1874 0.8208
1875 0.8381
1876 0.8355
1877 0.8134
1878 0.8305
1879 0.8279
1880 0.8447
1881 0.8228
1882 0.8204
1883 0.8369
1884 0.8343
1885 0.8317
1886 0.8292
1887 0.8266
1888 0.8241
1889 0.8401
1890 0.8191
1891 0.8349
1892 0.8324
1893 0.8298
1894 0.8273
1895 0.8248
1896 0.8401
1897 0.8197
1898 0.8349
1899 0.8323
1900 0.8298
1901 0.8272
1902 0.8247
1903 0.8223
1904 0.8369
1905 0.8343
1906 0.8317
1907 0.8291
1908 0.8266
1909 0.8241
1910 0.8382
1911 0.8191
1912 0.8331
1913 0.8305
1914 6.157
1915 6.154
1916 6.168
1917 6.149
1918 6.163
1919 6.16
1920 6.157
1921 6.155
1922 6.152
1923 6.166
1924 6.163
1925 6.16
1926 6.158
1927 6.155
1928 6.152
1929 6.166
1930 6.147
1931 6.16
1932 6.158
1933 6.155
1934 6.168
1935 6.15
1936 6.162
1937 6.16
1938 6.157
1939 6.154
1940 6.167
1941 6.149
1942 6.161
1943 6.159
1944 6.156
1945 6.168
1946 6.151
1947 6.163
1948 6.16
1949 6.157
1950 6.155
1951 6.422
1952 7.36
1953 8.08
1954 8.553
1955 8.869
1956 9.029
1957 9.059
1958 9.011
1959 8.882
1960 8.717
1961 8.509
1962 8.283
1963 8.031
1964 7.784
1965 7.511
1966 7.224
1967 6.939
1968 6.818
1969 6.843
1970 6.987
1971 -2.131
1972 11.95
1973 21.31
1974 45.03
1975 5.264
1976 -27.08
1977 -5.155
1978 0.3886
1979 -9.832
1980 -45.98
1981 -10.38
1982 3.599
1983 -0.8541
1984 2.539
1985 -9.127
1986 -0.437
1987 -1.094
1988 21.1
1989 4.182
1990 7.062
1991 -3.694
1992 -6.301
1993 -12.25
1994 7.273
1995 10.73
1996 10.12
1997 1.932
1998 1.592
1999 -5.754
2000 -0.00655
2001 1.065
2002 -3.658
2003 -1.406
2004 4.842
2005 5.5
2006 3
2007 2.1
2008 -1
2009 2.9
2010 2
2011 1.8
2012 8.305
2013 1.006