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	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	10
1985	676
1986	760
1987	790
1988	718
1989	711
1990	632
1991	117
1992	539
1993	628
1994	1324
1995	518
1996	358
1997	384
1998	399
1999	279
2000	261
2001	395
2002	781
2003	1131
2004	2219
2005	2203
2006	3078
2007	3734
2008	3817
2009	4355.71
2010	4499.93
2011	4883.7
2012	5322
2013	3278
2014	1663
2015	6742.71
2016	7955.68
2017	11027.63
2018	10913.22
2019	9944.05
2020	8378
2021	12748.85
2022	12919