Year	metric tons
1961	68000
1962	83300
1963	84300
1964	87000
1965	88500
1966	85500
1967	89600
1968	92800
1969	99476
1970	92188
1971	95477
1972	99900
1973	103650
1974	101362
1975	94672
1976	96000
1977	93000
1978	92918
1979	93145
1980	99862
1981	116073
1982	120200
1983	102676
1984	102100
1985	110772
1986	177889
1987	126314
1988	143158
1989	123580
1990	89142
1991	91504
1992	93947
1993	93637
1994	100706
1995	112818
1996	126400
1997	138400
1998	147500
1999	161000
2000	165600
2001	182600
2002	193300
2003	201800
2004	209900
2005	230994.25
2006	227000
2007	236570
2008	235527
2009	250667
2010	157410
2011	156544
2012	154214
2013	127064.6
2014	133138.87
2015	131506
2016	146819.75
2017	147325
2018	151619
2019	157397
2020	277762.88
2021	285796.42
2022	294070.17