Year Tonnes
1830 1.43723
1831 1.72467
1832 1.14978
1833 1.43723
1850 8.9108
1855 27.01983
1858 37.94275
1859 40.24231
1860 53.17733
1861 67.54959
1862 60.93835
1863 63.8128
1864 71.57382
1865 68.41192
1866 216.15868
1867 248.06508
1868 206.38555
1869 279.97148
1870 303.82942
1871 410.18409
1872 421.107
1873 395.23695
1874 479.74579
1875 552.18194
1876 685.55645
1877 699.64126
1878 914.36271
1879 938.22065
1880 1100.6271
1881 1159.26589
1882 1221.06658
1883 1389.79683
1884 1411.06776
1885 1536.96869
1886 1576.34866
1887 1668.04364
1888 1739.9049
1889 1879.0283
1890 2127.95572
1891 2342.96462
1892 2480.07591
1893 2906.93181
1894 2960.68403
1895 3401.91219
1896 3463.13798
1897 4004.10957
1898 4490.75404
1899 5209.65412
1900 5901.53436
1901 6058.7668
1902 5851.80636
1903 5724.18076
1904 6368.63257
1905 5684.80079
1906 6484.18548
1907 7262.87412
1908 7307.42811
1909 7713.87541
1910 7564.97887
1911 7843.22568
1912 8884.63911
1913 9651.5425
1914 8710.73485
1915 7995.28412
1916 8521.59601
1917 7842.65079
1918 3127.68961
1919 2671.51431
1920 2436.09681
1921 2641.90747
1922 3221.97159
1923 3559.14463
1924 4240.3894
1925 4185.19995
1926 6063.94081
1927 7539.10882
1928 8375.57392
1929 9020.02572
1930 12262.69335
1931 14731.84635
1932 16597.93962
1933 18549.40408
1934 22437.6733
1935 25398.06989
1936 29123.6452
1937 29780.1697
1938 31431.54152
1939 31817.00534
1940 38144.53326
1941 33511.49392
1942 23062.86628
1943 29440.98454
1944 27572.87915
1945 29192.05712
1946 32807.25354
1947 39505.58558
1948 42038.55138
1949 47787.73986
1950 53268.16722
1951 57731.61398
1952 61822.53196
1953 65405.82197
1954 71434.69449
1955 81001.15326
1956 88810.17298
1957 97186.60923
1958 103735.75729
1959 109065.56344
1960 113554.30537
1961 117104.82665
1962 122906.90502
1963 131809.65316
1964 140179.76563
1965 148704.23608
1966 157039.85514
1967 164208.44729
1968 168821.94037
1969 175817.20315
1970 184926.04939
1971 196276.6796
1972 206546.22896
1973 215309.56626
1974 223551.19078
1975 235028.58425
1976 244095.46352
1977 252417.57266
1978 261099.563
1979 263272.36015
1980 273650.2763
1981 268480.2896
1982 273556.56921
1983 277478.18206
1984 279975.50467
1985 301945.79231
1986 302770.47216
1987 315525.84633
1988 324196.91377
1989 317406.31186
1990 297598.1859
1991 286842.8544
1992 262043.82
1993 217621.782
1994 199983.512
1995 169166.044
1996 141535.199
1997 129459.768
1998 127321.907
1999 116493.256
2000 118099.402
2001 131850.652
2002 133735.49
2003 142209.927
2004 173053.064
2005 177328.786
2006 192631.177
2007 222348.545
2008 232806.829
2009 213338.726
2010 248549.26
2011 259058.882
2012 242971.753
2013 262846.893
2014 248314.572