Year	metric tons
1961	4848
1962	3245
1963	3856
1964	5084
1965	5819
1966	4478
1967	8328
1968	9893
1969	11181
1970	19369
1971	20424
1972	20409
1973	24267
1974	20321
1975	16646
1976	24449
1977	25644
1978	25854
1979	22090
1980	27443
1981	31967
1982	29121
1983	23722
1984	21830
1985	25209
1986	22887
1987	27818
1988	28672
1989	28572
1990	29835
1991	42005
1992	38130
1993	43640
1994	34364
1995	43264
1996	55948
1997	59873
1998	52236
1999	62300
2000	47875
2001	57267
2002	56428
2003	60036
2004	53937
2005	71758
2006	53390
2007	70153
2008	59522
2009	87276
2010	98489
2011	91768
2012	91627
2013	111934
2014	94519
2015	80959
2016	91556.38
2017	118376
2018	99341
2019	85114
2020	112007
2021	136612
2022	146715