Year Tonnes
1899 95342
1902 190684
1903 2156196
1904 4246386
1905 6545595
1906 23670485
1907 40524017
1908 63274085
1909 84128314
1910 102892353
1911 130761553
1912 140556110
1913 151322422
1914 166441463
1915 182543260
1916 200522561
1917 220390367
1918 241449948
1919 265725488
1920 292516590
1921 317826224
1922 344481647
1923 376659572
1924 411782098
1925 445030787
1926 474645479
1927 508198529
1928 542341966
1929 578190558
1930 616144008
1931 656437004
1932 695068849
1933 737320023
1934 786633839
1935 844308415
1936 909401332
1937 970027843
1938 1025377541
1939 1092589984
1940 1178760817
1941 1286464274
1942 1400427300
1943 1497811819
1944 1595757389
1945 1646149303
1946 1677450815
1947 1711066204
1948 1734938374
1949 1794296103
1950 1873008258
1951 1974815179
1952 2103141844
1953 2237354044
1954 2398742381
1955 2589789414
1956 2806314763
1957 3062872751
1958 3588683881
1959 4310433822
1960 5091160124
1961 5643226974
1962 6083586003
1963 6520281699
1964 6957204749
1965 7433177682
1966 7955967204
1967 8389201252
1968 8858129878
1969 9435367016
1970 10206984490
1971 11083617510
1972 12015193191
1973 12983735899
1974 13971750377
1975 15117357847
1976 16313551582
1977 17623862357
1978 19086030936
1979 20580890820
1980 22048083189
1981 23499584465
1982 25079845112
1983 26746874313
1984 28561782623
1985 30528336051
1986 32597305121.99999
1987 34807013653
1988 37176515375.99998
1989 39585055980.99998
1990 42027486999.99998
1991 44593081547.99998
1992 47283537445.99998
1993 50162231455
1994 53220472785
1995 56540757934.99998
1996 60003847065.99998
1997 63473357113.99998
1998 66797701632.99998
1999 70115757247
2000 73520937114
2001 77008503470
2002 80858772796
2003 85399189857.00003
2004 90632728590
2005 96529686295
2006 103058977813
2007 110089775585
2008 117642845831.99997
2009 125643854796.99997
2010 134419895213
2011 144153433333
2012 154182007272
2013 164440014400
2014 174731941278