Year Tonnes
1830 0.08411
1831 0.10093
1832 0.06729
1833 0.08411
1850 0.52148
1855 1.58126
1858 2.22049
1859 2.35507
1860 3.11206
1861 3.95315
1862 3.56625
1863 3.73447
1864 4.18866
1865 4.00362
1866 12.65009
1867 14.51733
1868 12.07815
1869 16.38456
1870 17.78078
1871 24.0049
1872 24.64413
1873 23.13016
1874 28.0758
1875 32.31493
1876 40.12031
1877 40.94458
1878 53.51056
1879 54.90678
1880 64.41117
1881 67.84285
1882 71.45956
1883 81.33404
1884 82.57886
1885 89.94687
1886 92.25147
1887 97.61767
1888 101.82315
1889 109.96496
1890 124.53276
1891 137.11556
1892 145.13962
1893 170.12019
1894 173.26589
1895 199.08756
1896 202.67063
1897 234.3295
1898 262.80903
1899 304.88068
1900 345.37107
1901 354.57267
1902 342.46088
1903 334.99194
1904 372.70671
1905 332.68733
1906 379.46912
1907 425.03974
1908 427.64714
1909 451.43335
1910 442.71959
1911 459.00322
1912 519.94907
1913 564.82999
1914 509.7718
1915 467.90202
1916 498.70297
1917 458.96957
1918 183.03943
1919 156.34303
1920 142.56587
1921 154.61037
1922 188.55703
1923 208.28915
1924 248.15713
1925 244.92732
1926 354.87546
1927 441.20561
1928 490.15743
1929 527.8722
1930 717.64041
1931 862.1408
1932 971.34878
1933 1085.55287
1934 1313.10313
1935 1486.3522
1936 1704.38125
1937 1742.80254
1938 1839.44454
1939 1862.00275
1940 2232.30392
1941 1961.16803
1942 1349.69083
1943 1722.95266
1944 1613.62693
1945 1708.38487
1946 1919.9543
1947 2311.95576
1948 2460.19062
1949 2796.64607
1950 3117.37301
1951 3378.58396
1952 3617.99368
1953 3827.69588
1954 4180.51906
1955 4740.36976
1956 5197.37116
1957 5687.57906
1958 6070.84994
1959 6382.76219
1960 6645.45347
1961 6853.23797
1962 7192.78865
1963 7713.7975
1964 8203.63532
1965 8702.50651
1966 9190.3257
1967 9609.84784
1968 9879.83984
1969 10289.21835
1970 10822.28853
1971 11486.55295
1972 12087.55009
1973 12600.40031
1974 13082.71872
1975 13754.40161
1976 14285.01579
1977 14772.04434
1978 15280.13396
1979 15407.29093
1980 16014.62994
1981 15712.07068
1982 16009.14599
1983 16238.6476
1984 16384.79654
1985 17670.54721
1986 17718.80933
1987 18465.28253
1988 18972.7329
1989 18575.3316
1990 17416.1155
1991 16786.6893
1992 15335.394
1993 9952.238
1994 6083.553
1995 2302.876
1996 4066.703
1997 4437.07
1998 4961.451
1999 4345.395
2000 4536.079
2001 3769.676
2002 3388.308
2003 3773.343
2004 4323.393
2005 5067.794
2006 6149.559
2007 6420.917
2008 5166.803
2009 6241.234
2010 6314.574
2011 7972.058
2012 8441.434
2013 7858.381
2014 8987.817