Year	metric tons
1960	1219
1961	1325
1962	1322
1963	1634
1964	1420
1965	1228
1966	1312
1967	1414
1968	1228
1969	1135
1970	1212
1971	1247
1972	1247
1973	1644
1974	1546
1975	1529
1976	1571
1977	1483
1978	1079
1979	1322
1980	1078
1981	942
1982	1216
1983	999
1984	1226
1985	2585
1986	1168
1987	1052
1988	896
1989	941
1990	799
1991	973
1992	1079
1993	1495
1994	3269
1995	5540
1996	10751
1997	2840
1998	3130
1999	3249
2000	2820
2001	2137
2002	2201
2003	2025
2004	2006
2005	2142
2006	8497
2007	9824
2008	8122
2009	7260
2010	8717
2011	4874.719999999999
2012	9640.130000000001
2013	11432.77
2014	11011.3
2015	13363.39
2016	17218.19
2017	17884.32
2018	22023.219999999998
2019	16315.550000000001
2020	21932.76
2021	18913.13
2022	20859.75