Year Tonnes
1867 168682
1868 253023
1869 447374
1870 649059
1871 946086
1872 1122102
1873 1316453
1874 1466800
1875 1631815
1879 1635482
1883 1639149
1888 1642816
1892 2013183
1893 2339546
1894 2673243
1895 2984938
1896 3358972
1897 3722005
1898 4184047
1899 4426069
1900 4844107
1901 5262145
1902 5595842
1903 5995545
1904 6351244
1905 6629936
1906 6890293
1907 7319332
1908 8049065
1909 8610116
1910 9328848
1911 10234597
1913 11573052
1914 11584053
1915 11606055
1916 11672061
1917 11763736
1918 11888414
1919 11994757
1920 12673152
1921 13417553
1922 14095948
1923 15016365
1924 16314483
1925 18294663
1926 20117162
1927 22434706
1928 24810922
1929 27517168
1930 30373761
1931 33105676
1932 35789920
1933 38092796
1934 40927387
1935 43842652
1936 47212625
1937 50802618
1938 53648210
1939 53901233
1940 54139588
1941 54275267
1942 54502621
1943 54715307
1944 54825317
1945 54891323
1946 55016001
1947 55184683
1948 56537806
1949 58180622
1950 62313331
1951 66893414
1952 71697184
1953 76588962
1954 81678758
1955 87641300
1956 93937539
1957 100761826
1958 108220504
1959 116353910
1960 125759765
1961 135583658
1962 145748582
1963 158007363
1964 171230565
1965 188256446
1966 206906808
1967 226440917
1968 248761946
1969 274236595
1970 298402125
1971 326216320
1972 357789190
1973 395045910
1974 431264869
1975 470138736
1976 513049970
1977 560049909
1978 608131613
1979 659425609
1980 710855284
1981 761577228
1982 813725635
1983 869269684
1984 926324537
1985 986925379
1986 1046055754
1987 1109527857
1988 1177517704
1989 1251701114
1990 1325979866
1991 1400042265
1992 1475542128
1993 1551254677
1994 1629163759
1995 1707945587
1996 1788186881
1997 1871904491
1998 1959655801
1999 2046292343
2000 2137908671
2001 2231714198
2002 2325384046
2003 2421122082
2004 2518271913
2005 2616947216
2006 2714232726
2007 2812478990
2008 2908444380
2009 3000387071
2010 3084244027
2011 3164085618
2012 3244128894
2013 3313611210
2014 3380929996