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	69
1978	83
1979	105
1980	113
1981	135
1982	175
1983	201
1984	262
1985	249
1986	426
1987	815
1988	1409
1989	1983
1990	3234
1991	3417
1992	4158
1993	4557
1994	5414
1995	5872
1996	7134
1997	7786
1998	8504
1999	8752
2000	8849
2001	8684
2002	7484
2003	10836
2004	16109
2005	15145
2006	22271.5
2007	20031.5
2008	19459.6
2009	17833.9
2010	21464.550000000003
2011	16846.760000000002
2012	23560.190000000002
2013	26692.25
2014	27985.549999999996
2015	31178.800000000003
2016	42007.869999999995
2017	52431.520000000004
2018	55518.22
2019	66772.2
2020	81188.83
2021	89916.59000000001
2022	89570.53999999998