Year	metric tons
1961	208006
1962	152901
1963	102164
1964	400558
1965	380963
1966	126550
1967	216113
1968	115119
1969	202093
1970	59792
1971	195138
1972	246449
1973	56478
1974	285121
1975	62974
1976	80954
1977	74829
1978	69413
1979	21721
1980	172193
1981	70217
1982	72247
1983	129200
1984	62030
1985	82711
1986	41046
1987	115268
1988	127093
1989	79576
1990	129010
1991	101779
1992	144313
1993	88891.5
1994	74916
1995	90546
1996	72773
1997	71590
1998	65317
1999	14460
2000	38302
2001	37200
2002	100958
2003	69009.52
2004	38613
2005	71630
2006	47465
2007	35515
2008	28220
2009	41152
2010	58260
2011	66582
2012	69627
2013	87914
2014	81280
2015	68941
2016	69268
2017	62088
2018	67328
2019	93258
2020	114192
2021	102554
2022	65793.3