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	2
1984	95
1985	141
1986	250
1987	274
1988	304
1989	368
1990	407
1991	150
1992	147
1993	300
1994	389
1995	369
1996	322
1997	322
1998	283
1999	250
2000	351
2001	454
2002	476
2003	417
2004	586
2005	368
2006	288
2007	405
2008	2779.91
2009	2163.23
2010	1758.75
2011	2245.77
2012	2644
2013	2192.75
2014	2479.89
2015	1332.29
2016	1959.59
2017	4467.31
2018	5108.42
2019	4835.47
2020	5435.99
2021	4779.29
2022	5208