Year Tonnes
1829 11.001
1830 7.334
1831 3.667
1835 14.668
1836 18.335
1837 25.669
1838 51.338
1839 40.337
1840 44.004
1841 58.672
1842 73.34
1843 62.339
1844 66.006
1845 99.009
1846 99.009
1847 102.676
1848 132.012
1849 106.343
1850 139.346
1851 150.347
1852 150.347
1853 165.015
1854 234.688
1855 256.69
1856 304.361
1857 304.361
1858 267.691
1859 326.363
1860 333.697
1861 429.039
1862 370.367
1863 363.033
1864 480.377
1865 473.043
1866 520.714
1867 619.723
1868 634.391
1869 553.717
1870 630.724
1871 612.389
1872 656.393
1873 660.06
1874 817.741
1875 1026.76
1876 905.749
1877 1221.111
1878 1089.099
1879 1144.104
1880 1250.447
1881 1294.451
1882 1415.462
1883 1525.472
1884 1562.142
1885 1785.829
1886 1745.492
1887 1683.153
1888 1947.177
1889 2222.202
1890 2079.189
1891 2416.553
1892 2467.891
1893 2464.224
1894 2907.931
1895 3061.945
1896 3127.951
1897 3388.308
1898 3388.308
1899 4052.035
1900 4158.378
1901 3898.021
1902 4246.386
1903 4242.719
1904 4162.045
1905 4151.044
1906 4228.051
1907 4785.435
1908 5720.52
1909 5768.191
1910 5944.207
1911 6083.553
1912 6882.959
1913 6923.296
1914 7715.368
1915 8456.102
1916 7902.385
1917 3498.318
1918 4455.405
1919 5295.148
1920 5306.149
1921 3377.307
1922 6486.923
1923 6798.618
1924 7733.703
1925 7601.691
1926 6365.912
1927 8540.443
1928 8459.769
1929 9526.866
1930 8734.794
1931 8093.069
1932 8650.453
1933 9185.835
1934 9493.863
1935 9790.89
1936 10450.95
1937 11771.07
1938 10487.62
1939 12526.472
1940 6516.259
1941 4818.438
1942 4631.421
1943 5449.162
1944 4884.444
1945 4015.365
1946 7080.977
1947 10637.967
1948 10993.666
1949 10417.947
1950 8441.434
1951 9486.529
1952 9695.548
1953 9794.557
1954 9893.566
1955 11426.372
1956 11965.421
1957 11371.367
1958 11199.018
1959 11822.408
1960 13102.191
1961 13351.547
1962 14077.613
1963 14983.362
1964 16189.805
1965 16409.825
1966 19563.445
1967 19328.757
1968 21140.255
1969 22222.02
1970 28012.213
1971 27198.139
1972 29427.675
1973 30524.108
1974 27696.851
1975 29673.364
1976 29317.665
1977 31070.491
1978 34792.496
1979 34242.446
1980 38052.459
1981 40329.666
1982 41052.065
1983 37498.742
1984 40458.011
1985 40714.701
1986 47076.946
1987 40707.367
1988 42482.195
1989 49379.822
1990 31510.531
1991 32075.249
1992 32009.243
1993 35148.195
1994 33905.082
1995 33439.373
1996 33366.033
1997 36101.615
1998 37777.434
1999 40681.698
2000 39673.273
2001 41910.143
2002 38023.123
2003 45221.444
2004 42647.21
2005 42438.191
2006 44257.023
2007 45089.432
2008 55690.729
2009 55346.031
2010 60105.797
2011 45195.775
2012 49889.535
2013 58162.287
2014 47626.996