Year	metric tons
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	4
1977	9
1978	13
1979	27
1980	53
1981	92
1982	127
1983	168
1984	190
1985	284
1986	181
1987	194
1988	231
1989	230
1990	280
1991	198
1992	2640
1993	2289
1994	3295
1995	4712
1996	5075
1997	8582
1998	4503
1999	5811
2000	7980
2001	8449
2002	10413
2003	10267
2004	9603
2005	10296
2006	16534
2007	14943
2008	14486
2009	9716
2010	10886
2011	10544
2012	9987.5
2013	12549
2014	15440
2015	22694.21
2016	26003
2017	28345
2018	12773.06
2019	14105.41
2020	13555.45
2021	16400.86
2022	25127.6