Year	metric tons
1960	33800
1961	36500
1962	45700
1963	59800
1964	76600
1965	76500
1966	85700
1967	99000
1968	74100
1969	131000
1970	171611
1971	232784
1972	281331
1973	221832
1974	219327
1975	261590
1976	246820
1977	272171
1978	274887
1979	237252
1980	231855
1981	240816
1982	244492
1983	251856
1984	270013
1985	276573
1986	320177
1987	382200
1988	362477
1989	362005
1990	396232
1991	362948
1992	423855
1993	373084
1994	335937
1995	353394
1996	477294
1997	447527
1998	447341
1999	499670
2000	459346
2001	456353
2002	381182
2003	394485
2004	421393.4
2005	382791.89
2006	380912.99
2007	334995.01
2008	348112.14
2009	311738
2010	361658.65
2011	368852.3
2012	383796.57
2013	322397.74
2014	361970.15
2015	388670.91
2016	376396.57
2017	425182.76
2018	435373.37
2019	369665.72
2020	434696.15
2021	482141.55
2022	652309.27