Year	Tonnes
1900	0
1901	0
1902	0
1903	0
1904	0
1905	0
1916	3667
1917	11001
1918	29336
1919	47671
1920	69673
1921	95342
1922	121011
1923	135679
1924	165015
1925	198018
1926	238355
1927	297027
1928	370367
1929	451041
1930	535382
1931	634391
1932	748068
1933	869079
1934	1008425
1935	1140437
1936	1191775
1937	1261448
1938	1294451
1939	1455799
1940	1694154
1941	2005849
1942	2504561
1943	2973937
1944	3472649
1945	4088705
1946	4851441
1947	5595842
1948	6398915
1949	7308331
1950	11096342
1951	15232718
1952	19127072
1953	23131436
1954	27289814
1955	31902900
1956	36904688
1957	42449192
1958	47671000
1959	53336515
1960	59497075
1961	65562293
1962	71231475
1963	76658635
1964	82309482
1965	88906415
1966	97336848
1967	105778282
1968	114839439
1969	126115464
1970	141190501
1971	159859198
1972	188208775
1973	226521591
1974	258428158
1975	290459403
1976	329630297
1977	371522105
1978	434051789
1979	479672936
1980	546192316
1981	592631204
1982	631901107
1983	684526224
1984	755629354
1985	828415637
1986	904692904
1987	988813884
1988	1072762515
1989	1152809458
1990	1229779788
1991	1308829307
1992	1388967925
1993	1471178398
1994	1557594920
1995	1652889249
1996	1749987742
1997	1837328348
1998	1944327741
1999	2036373108
2000	2124234428
2001	2208454417
2002	2298361923
2003	2389937914
2004	2478448293
2005	2585726378
2006	2686796232
2007	2796201177
2008	2906409195
2009	3027808897
2010	3146986397
2011	3268173413
2012	3398161229
2013	3532626452
2014	3678026669