Year	metric tons
1960	77217
1961	75496
1962	74927
1963	85593
1964	98668
1965	108758
1966	141842
1967	140465
1968	145167
1969	161016
1970	166824
1971	165211
1972	196062
1973	206084
1974	176582
1975	181517
1976	188332
1977	239108
1978	252416
1979	258588
1980	238097
1981	272795
1982	284530
1983	332734
1984	362161
1985	393161
1986	403143
1987	416269
1988	434924
1989	437064
1990	463828
1991	504433
1992	533245
1993	601034
1994	533857
1995	523739
1996	532339
1997	590107
1998	597457
1999	663531
2000	611228
2001	598436
2002	601640
2003	572413
2004	571482
2005	530614.97
2006	628299
2007	583387
2008	605763
2009	597157
2010	595615
2011	599673.99
2012	622806
2013	632766.01
2014	628504
2015	660652.99
2016	672786.02
2017	694394.99
2018	663893.01
2019	649247
2020	655245
2021	660585.99
2022	665520.24