Year	metric tons
1960	48103
1961	59628
1962	73471
1963	71614
1964	91125
1965	74632
1966	79973
1967	82237
1968	98302
1969	95060
1970	89241
1971	74980
1972	91867
1973	96528
1974	100469
1975	109215
1976	131643
1977	136145
1978	156083
1979	164763
1980	183416
1981	201904
1982	201183
1983	205430
1984	162462
1985	177379
1986	183568
1987	186624
1988	204875
1989	219756
1990	182893
1991	210271
1992	204433.08
1993	229670.89
1994	245586.67
1995	234526.92
1996	260186.31
1997	270506.84
1998	283119.86
1999	310172.7
2000	296749.6
2001	267550
2002	272602
2003	319759.2
2004	332854.4
2005	216663
2006	278603
2007	304903
2008	323888
2009	336942
2010	390187
2011	421764.7
2012	450850.61
2013	461229.6
2014	493496.68
2015	467464.25
2016	486425.38
2017	472900.47
2018	479279.73
2019	471714.3
2020	382486.8
2021	372451.54
2022	332622.7