Year	metric tons
1960	8700
1961	8100
1962	9600
1963	7500
1964	13700
1965	21183
1966	27375
1967	44881
1968	61484
1969	84473
1970	94201
1971	100704
1972	111017
1973	102010
1974	118559
1975	158121
1976	167144
1977	137997
1978	99028
1979	86107
1980	125187
1981	106673
1982	115618
1983	121126
1984	115567
1985	100223
1986	109452
1987	111652
1988	118018
1989	102966
1990	57103
1991	57854
1992	32148
1993	21555
1994	12685
1995	12627
1996	13581
1997	16674
1998	23198
1999	18336
2000	12317
2001	11612
2002	17316
2003	16500
2004	10741
2005	8579
2006	10801
2007	12935
2008	14021
2009	15700.52
2010	18689.63
2011	15150.41
2012	15556.16
2013	21821.58
2014	19859.18
2015	22365.27
2016	24431.98
2017	24127.79
2018	24512.9
2019	26830.440000000002
2020	21347.59
2021	24182.89
2022	15105.16