Year	metric tons
1960	76200
1961	82600
1962	85900
1963	87500
1964	97600
1965	106600
1966	111700
1967	118076
1968	114976
1969	118981
1970	120965
1971	134482
1972	152839
1973	192841
1974	218010
1975	226512
1976	217582
1977	216550
1978	221096
1979	225146
1980	232381
1981	227080
1982	231847
1983	262960
1984	250320
1985	244946
1986	257904
1987	251921
1988	264966
1989	290339
1990	315154
1991	328731
1992	373380
1993	386132
1994	359887
1995	366312
1996	439209
1997	483468
1998	429531
1999	440926
2000	436005
2001	431252
2002	398040
2003	469284
2004	434525
2005	399848
2006	368388
2007	412360
2008	428298
2009	446200
2010	409714.99
2011	427134.55
2012	461077.17
2013	469595.59
2014	458530.41
2015	425442.13
2016	474172.34
2017	534939.61
2018	484654.67
2019	516141.27
2020	458363.46
2021	513957.13
2022	533771.19