Year	metric tons
1960	31823
1961	38713
1962	38563
1963	36463
1964	38023
1965	41573
1966	45093
1967	46373
1968	47763
1969	50563
1970	53532
1971	52182
1972	56852
1973	59650
1974	63999
1975	65490
1976	61411
1977	75413
1978	76569
1979	72775
1980	69638
1981	69296.79000000001
1982	69574.04000000001
1983	76872.15
1984	78855.07
1985	82656.82
1986	78313.9
1987	83190.03
1988	94045.66
1989	92376.61
1990	99159.18
1991	106117.54000000001
1992	110921.54000000001
1993	114526.94
1994	135081.02000000002
1995	131746.47999999998
1996	135359.15
1997	156487.59
1998	193149.69
1999	204115
2000	172356
2001	200417
2002	269579
2003	231637
2004	291488
2005	284122
2006	380822
2007	499244
2008	541446
2009	490851.83
2010	624329.44
2011	519998.64999999997
2012	349907.11000000004
2013	233991.7
2014	346248.71
2015	350706.97
2016	317847.49
2017	384729.29
2018	350763.63
2019	332438.86
2020	300657.05000000005
2021	302094.8
2022	317996.20999999996