Year	metric tons
1960	22760
1961	24080
1962	22300
1963	23220
1964	28860
1965	28830
1966	29029
1967	34877
1968	33074
1969	34455
1970	34683
1971	38135
1972	47044
1973	47158
1974	53581
1975	53958
1976	59184
1977	61138
1978	56007
1979	56005
1980	57521
1981	67921
1982	73617
1983	66268
1984	83110
1985	76981
1986	83606
1987	78970
1988	96604
1989	91784
1990	79942
1991	75522
1992	295284
1993	264914
1994	224690
1995	203247
1996	184832
1997	201520
1998	217158
1999	241007
2000	260930
2001	261951
2002	268072.76
2003	295921.1
2004	312709.4
2005	352284
2006	357689.05
2007	388812.8
2008	415575.72
2009	429832.11
2010	435219.89
2011	460415.56000000006
2012	510427.35
2013	559852.33
2014	583755.15
2015	589144.19
2016	635394.4999999999
2017	683148.28
2018	758428.68
2019	891529.81
2020	1002880.6200000001
2021	1109428.4500000002
2022	1190284.41