Year Tonnes
1896 3667
1897 55005
1898 168682
1899 249356
1900 359366
1901 535382
1902 792072
1903 1008425
1904 1228445
1905 1481468
1906 1756493
1907 2115859
1908 2526563
1909 3014274
1910 3630330
1911 4308725
1912 5049459
1913 5903870
1914 6824287
1915 7840046
1916 9226172
1917 11026669
1918 13171864
1919 16083462
1920 19130739
1921 21888323
1922 25463648
1923 29299330
1924 33296360
1925 37788435
1926 42544534
1927 47476649
1928 51682698
1929 55877746
1930 60124132
1931 63901142
1932 67498469
1933 71697184
1934 75873897
1935 80241294
1936 84979058
1937 90233869
1938 96137739
1939 103325059
1940 111099099
1941 119041821
1942 125466405
1943 131898323
1944 136533411
1945 138722610
1946 141586537
1947 145209533
1948 149752946
1949 154230353
1950 158018364
1951 162932144
1952 169331059
1953 175810648
1954 182304905
1955 189510560
1956 197203926
1957 205396004
1958 214977875
1959 225982542
1960 237870956
1961 250415763
1962 264599719
1963 279729761
1964 296660300
1965 314529591
1966 334019696
1967 356021696
1968 380198227
1969 406527287
1970 435302236
1971 466823768
1972 502749367
1973 543053364
1974 582422276
1975 625942232
1976 682128006
1977 743355905
1978 814495705
1979 890380603
1980 974032207
1981 1049216708
1982 1124731239
1983 1208012476
1984 1293020870
1985 1377900919
1986 1472392175
1987 1570744782
1988 1684025746
1989 1807354290
1990 1931042200
1991 2065929128
1992 2211380683
1993 2368555637
1994 2532617217
1995 2706964732
1996 2889471322
1997 3085960183
1998 3285833685
1999 3492960513
2000 3712001424
2001 3940158497
2002 4178000117
2003 4424565530
2004 4685182887
2005 4944571799
2006 5211679746
2007 5489594342
2008 5751187121
2009 5999703378
2010 6269700921
2011 6538880723
2012 6797011854
2013 7057449528
2014 7321521199