Year	metric tons
1960	15200
1961	15400
1962	17500
1963	18000
1964	19766
1965	21870
1966	25686
1967	26706
1968	28656
1969	28362
1970	35182
1971	34554
1972	38524
1973	38574
1974	47395
1975	44926
1976	54382
1977	52720
1978	66590
1979	81755
1980	84796
1981	92207
1982	86886
1983	105227.59
1984	106879.73999999999
1985	112149
1986	141368.79
1987	141527.72
1988	143061.07
1989	147740.09
1990	151076.13
1991	184251.15
1992	171454.91999999998
1993	168289.66999999998
1994	184485.3
1995	202084.5
1996	181323.9
1997	216329.49
1998	235405.2
1999	270242.6
2000	214663.34
2001	210654.36
2002	229127.55
2003	311497.02
2004	425496.96
2005	444326.04
2006	415693.66000000003
2007	431499.2
2008	356632.9
2009	362024.3
2010	343112.69
2011	365997.73000000004
2012	389303.99
2013	380221.57
2014	450909.60000000003
2015	517305.35000000003
2016	504401.45999999996
2017	489690
2018	599761.5599999998
2019	747452.4299999999
2020	752363.64
2021	768604.0200000001
2022	624771.3099999999