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	51
1975	56
1976	66
1977	71
1978	121
1979	130
1980	133
1981	167
1982	310
1983	363
1984	691
1985	2125
1986	12309
1987	14475
1988	9848
1989	13046
1990	18357
1991	18542
1992	13848.9
1993	12194.029999999999
1994	13148
1995	16143
1996	21685
1997	20695
1998	22358
1999	43321.020000000004
2000	36256
2001	33049.4
2002	24683
2003	29726
2004	39242.2
2005	41168.8
2006	50744.64
2007	32566.589999999997
2008	33891.68
2009	36276.06
2010	46514.26
2011	36068.89
2012	46809.560000000005
2013	49760.4
2014	57000.63
2015	53156.119999999995
2016	55532.549999999996
2017	60565.70999999999
2018	64205.4
2019	75130.98
2020	89011.71999999999
2021	104702.09999999999
2022	105147.90999999999