Year Tonnes
1834 33.003
1839 44.004
1840 40.337
1841 40.337
1842 80.674
1843 58.672
1844 99.009
1845 88.008
1846 80.674
1847 80.674
1848 139.346
1849 194.351
1850 201.685
1851 216.353
1852 216.353
1853 227.354
1854 337.364
1855 315.362
1856 476.71
1857 612.389
1858 513.38
1859 755.402
1860 751.735
1861 968.088
1862 986.423
1863 986.423
1864 1037.761
1865 1081.765
1866 1114.768
1867 1037.761
1868 1224.778
1869 1089.099
1870 1342.122
1871 1433.797
1872 1712.489
1873 1738.158
1874 1873.837
1875 2277.207
1876 2431.221
1877 2574.234
1878 2181.865
1879 2214.868
1880 2830.924
1881 2753.917
1882 3149.953
1883 3219.626
1884 3553.323
1885 3832.015
1886 3755.008
1887 3806.346
1888 4250.053
1889 4961.451
1890 4950.45
1891 5284.147
1892 5254.811
1893 5284.147
1894 5896.536
1895 5958.875
1896 6160.56
1897 6860.957
1898 7304.664
1899 9141.831
1900 9178.501
1901 8529.442
1902 8932.812
1903 9812.892
1904 10333.606
1905 10172.258
1906 11301.694
1907 12783.162
1908 13655.908
1909 12570.476
1910 12999.515
1911 12662.151
1912 14029.942
1913 15771.767
1914 14858.684
1915 14961.36
1916 15771.767
1917 6769.282
1918 8008.728
1919 7686.032
1920 10410.613
1921 6017.547
1922 9952.238
1923 12108.434
1924 14451.647
1925 12907.84
1926 12544.807
1927 17641.937
1928 16259.478
1929 19387.429
1930 18947.389
1931 18958.39
1932 18753.038
1933 19534.109
1934 21752.644
1935 22885.747
1936 25071.279
1937 28969.3
1938 26160.378
1939 29328.666
1940 18492.681
1941 15056.702
1942 13036.185
1943 15852.441
1944 12456.799
1945 4558.081
1946 17396.248
1947 25118.95
1948 30832.136
1949 26860.775
1950 28686.941
1951 33472.376
1952 34557.808
1953 32584.962
1954 34532.139
1955 39137.891
1956 43420.947
1957 38884.868
1958 42115.495
1959 42434.524
1960 49222.141
1961 48851.774
1962 51326.999
1963 55371.7
1964 60432.16
1965 62628.693
1966 72591.932
1967 69001.939
1968 77685.395
1969 86467.86
1970 92379.064
1971 84590.356
1972 84781.04
1973 87366.275
1974 79889.262
1975 80824.347
1976 88308.694
1977 85804.133
1978 79533.563
1979 84927.72
1980 71759.523
1981 69430.978
1982 62291.329
1983 58297.966
1984 57333.545
1985 62394.005
1986 62038.306
1987 59717.095
1988 57443.555
1989 55533.048
1990 51946.722
1991 51525.017
1992 51026.305
1993 51756.038
1994 54894.99
1995 55155.347
1996 55910.749
1997 52148.407
1998 52977.149
1999 51106.979
2000 49350.486
2001 51125.314
2002 57425.22
2003 54781.313
2004 54520.956
2005 51561.687
2006 49570.506
2007 48059.702
2008 49123.132
2009 43065.248
2010 52023.729
2011 51734.036
2012 47047.61
2013 44847.41
2014 43420.947