Year Tonnes
1830 3.667
1831 3.667
1832 3.667
1833 3.667
1834 3.667
1835 3.667
1836 22.002
1837 36.67
1838 25.669
1839 47.671
1840 36.67
1841 102.676
1842 143.013
1843 172.349
1844 201.685
1845 275.025
1846 282.359
1847 260.357
1848 293.36
1849 326.363
1850 495.045
1851 509.713
1852 535.382
1853 652.726
1854 550.05
1855 553.717
1856 755.402
1857 850.744
1858 1151.438
1859 1631.815
1860 1932.509
1861 2005.849
1862 2189.199
1863 2434.888
1864 2335.879
1865 2306.543
1866 2291.875
1867 2559.566
1868 2662.242
1869 2640.24
1870 3076.613
1871 2940.934
1872 3263.63
1873 3138.952
1874 3120.617
1875 3292.966
1876 3571.658
1877 3784.344
1878 3758.675
1879 3975.028
1880 4418.735
1881 4935.782
1882 5386.823
1883 5907.537
1884 5874.534
1885 5764.524
1886 6098.221
1887 6145.892
1888 6439.252
1889 6827.954
1890 7345.001
1891 7946.389
1892 8305.755
1893 8126.072
1894 8742.128
1895 8610.116
1896 9310.513
1897 9552.535
1898 9380.186
1899 10634.3
1900 11228.354
1901 11815.074
1902 12346.789
1903 12185.441
1904 13003.182
1905 13582.568
1906 13872.261
1907 14106.949
1908 14796.345
1909 15177.713
1910 14906.355
1911 14741.34
1912 15995.454
1913 17432.918
1914 17315.574
1915 15324.393
1916 17880.292
1917 15863.442
1918 16747.189
1919 15940.449
1920 14066.612
1921 14858.684
1922 14954.026
1923 17227.566
1924 18404.673
1925 19068.4
1926 18393.672
1927 21462.951
1928 21532.624
1929 23996.848
1930 23663.151
1931 22555.717
1932 21198.927
1933 18727.369
1934 20267.509
1935 22478.71
1936 8063.733
1937 5251.144
1938 13234.203
1939 15731.43
1940 21642.634
1941 21532.624
1942 23083.765
1943 23875.837
1944 25819.347
1945 28298.239
1946 28118.556
1947 31206.17
1948 32749.977
1949 35793.587
1950 33072.673
1951 33153.347
1952 37645.422
1953 38976.543
1954 39772.282
1955 40322.332
1956 42386.853
1957 50274.57
1958 55940.085
1959 52144.74
1960 48928.781
1961 53677.546
1962 60054.459
1963 58822.347
1964 64410.855
1965 71117.798
1966 77729.399
1967 86519.198
1968 97157.165
1969 96882.14
1970 116929.629
1971 128682.364
1972 145026.183
1973 155367.123
1974 173152.073
1975 181644.845
1976 198443.372
1977 195663.786
1978 200493.225
1979 203745.854
1980 215003.544
1981 207288.176
1982 209906.414
1983 204867.956
1984 198953.085
1985 201233.959
1986 190467.647
1987 190878.351
1988 199033.759
1989 226671.938
1990 218597.204
1991 225634.177
1992 233921.597
1993 219253.597
1994 233404.55
1995 241611.296
1996 233305.541
1997 252073.247
1998 261541.441
1999 282355.333
2000 294434.431
2001 297830.073
2002 314518.59
2003 321097.188
2004 339428.521
2005 353462.13
2006 350037.152
2007 358236.564
2008 329285.599
2009 288237.201
2010 270910.626
2011 270547.593
2012 264779.402
2013 237034.88
2014 233976.602