Year	Tonnes
1954	22002
1955	44004
1956	69673
1957	99009
1958	128345
1959	165015
1960	216353
1961	286026
1962	381368
1963	487711
1964	616056
1965	748068
1966	898415
1967	1063430
1968	1232112
1969	1400794
1970	1606146
1971	1833500
1972	2064521
1973	2288208
1974	2555899
1975	2852926
1976	3105949
1977	3413977
1978	3828348
1979	4242719
1980	4770767
1981	5306149
1982	5790193
1983	6472255
1984	7077310
1985	7810710
1986	8687123
1987	9658878
1988	10623299
1989	11653726
1990	12687820
1991	13780586
1992	14862351
1993	16043125
1994	17315574
1995	18547686
1996	19955814
1997	21444616
1998	23003091
1999	24521229
2000	26153044
2001	27839864
2002	29358002
2003	30890808
2004	32606964
2005	34436797
2006	36057611
2007	37594084
2008	38932539
2009	41004394
2010	42412522
2011	43860987
2012	45173773
2013	46354547
2014	47637997