Year	metric tons
1960	29500
1961	30500
1962	32000
1963	37400
1964	46000
1965	45300
1966	56000
1967	59100
1968	64700
1969	50063
1970	53901
1971	56745
1972	57733
1973	65916
1974	71399
1975	61983
1976	60939
1977	62462
1978	61076
1979	60498
1980	57408
1981	57969
1982	59478
1983	63476
1984	67428
1985	69025
1986	84247
1987	92400
1988	101109
1989	97809
1990	103600
1991	99183
1992	104831
1993	114760
1994	117320
1995	116627
1996	115431
1997	117347
1998	115205
1999	118438
2000	120967
2001	124415
2002	130125
2003	130670
2004	135916
2005	133648
2006	134693
2007	148578
2008	121264
2009	132103
2010	129638
2011	127070
2012	118075.26
2013	104597.02
2014	95821.26
2015	114751.4
2016	142333.16
2017	161606.38
2018	129588.66
2019	114182.26
2020	112552.84
2021	114337.24
2022	127190.09