Year Tonnes
1830 3.46044
1831 4.15253
1832 2.76835
1833 3.46044
1850 21.45474
1855 65.05632
1858 91.35568
1859 96.89239
1860 128.03638
1861 162.6408
1862 146.72277
1863 153.64365
1864 172.33004
1865 164.71707
1866 520.45057
1867 597.2724
1868 496.91956
1869 674.09422
1870 731.53757
1871 987.61032
1872 1013.90969
1873 951.62172
1874 1155.09574
1875 1329.50205
1876 1650.63113
1877 1684.54346
1878 2201.53359
1879 2258.97694
1880 2650.00695
1881 2791.19301
1882 2939.99204
1883 3346.24801
1884 3397.46256
1885 3700.59733
1886 3795.41346
1887 4016.1897
1888 4189.21183
1889 4524.18267
1890 5123.53133
1891 5641.21355
1892 5971.33977
1893 6999.09123
1894 7128.51178
1895 8190.86767
1896 8338.28252
1897 9640.79312
1898 10812.49899
1899 12543.41238
1900 14209.26946
1901 14587.84188
1902 14089.53814
1903 13782.25084
1904 15333.91331
1905 13687.43471
1906 15612.13289
1907 17487.0007
1908 17594.27442
1909 18572.88759
1910 18214.38574
1911 18884.32743
1912 21391.76415
1913 23238.25633
1914 20973.05059
1915 19250.44226
1916 20517.65634
1917 18882.94325
1918 7530.61522
1919 6432.27073
1920 5865.45023
1921 6360.98561
1922 7757.62025
1923 8569.44009
1924 10209.68989
1925 10076.80889
1926 14600.29947
1927 18152.09777
1928 20166.07537
1929 21717.73784
1930 29525.18847
1931 35470.22887
1932 39963.26756
1933 44661.85654
1934 54023.73799
1935 61151.55769
1936 70121.71703
1937 71702.44721
1938 75678.49578
1939 76606.58648
1940 91841.53113
1941 80686.44833
1942 55529.03053
1943 70885.78276
1944 66387.89945
1945 70286.4341
1946 78990.83145
1947 95118.57029
1948 101217.25435
1949 115059.71689
1950 128255.07667
1951 139001.82724
1952 148851.6311
1953 157479.20662
1954 171995.0713
1955 195028.46942
1956 213830.43831
1957 233998.58995
1958 249767.13485
1959 262599.84024
1960 273407.49461
1961 281956.17204
1962 295925.97887
1963 317361.3446
1964 337514.27029
1965 358038.84752
1966 378108.72258
1967 395368.71825
1968 406476.73904
1969 423319.40533
1970 445250.99852
1971 472580.1901
1972 497306.43675
1973 518406.13954
1974 538249.70167
1975 565884.10429
1976 587714.65256
1977 607751.99946
1978 628655.8412
1979 633887.33835
1980 658874.50237
1981 646426.5982
1982 658648.88151
1983 668091.04522
1984 674103.91031
1985 727002.31236
1986 728987.91433
1987 759699.34253
1988 780576.8849
1989 764226.98564
1990 716534.47346
1991 690638.5972
1992 630929.352
1993 539335.026
1994 441767.157
1995 445943.87
1996 412335.815
1997 341196.015
1998 328636.54
1999 332549.229
2000 320902.837
2001 321775.583
2002 318687.969
2003 352431.703
2004 343396.215
2005 333876.683
2006 326429.006
2007 321258.536
2008 311023.939
2009 260100.31
2010 304643.359
2011 286392.7
2012 295791.221
2013 271875.047
2014 227298.995