Year	metric tons
1961	25309081
1962	26152905
1963	26390955
1964	27072907
1965	26869130
1966	27564562
1967	30208987
1968	28025273
1969	30816366
1970	29843841
1971	30817435
1972	30471126
1973	30341757
1974	32464476
1975	33712726
1976	35680231
1977	34950293
1978	35736918
1979	34864315
1980	36149012
1981	37900894
1982	35344407
1983	36538302
1984	34762180
1985	40046380
1986	40657600
1987	38664444
1988	45900843
1989	43514577
1990	40146958.05
1991	45423755.41
1992	42895511.53
1993	46478462.379999995
1994	45923862.779999994
1995	49046783.56
1996	54894621.99
1997	51343646.79000001
1998	55168085.46000001
1999	54688505.099999994
2000	50741208.62
2001	57451018.4
2002	58923313.029999994
2003	65220174.9
2004	61215477.18
2005	71901617.55
2006	74973792.28
2007	77543389.31
2008	81871073.59
2009	89640440.77
2010	99417242.96
2011	96035381.90999998
2012	104348353.60000001
2013	108171092.07999998
2014	116278323.38999999
2015	112523377.37
2016	119822385.61000003
2017	120547567.11000001
2018	127806287.80999999
2019	125485982.44000001
2020	134972759.32
2021	134867902.88000003
2022	134992211.45999998