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	60943
1977	62471
1978	61089
1979	60525
1980	57461
1981	58061
1982	59605
1983	63644
1984	67618
1985	69309
1986	84428
1987	92594
1988	101340
1989	98039
1990	103880
1991	99381
1992	107471
1993	117049
1994	120615
1995	121339
1996	120506
1997	125929
1998	119708
1999	124249
2000	128947
2001	132864
2002	140538
2003	140937
2004	145519
2005	143944
2006	151227
2007	163521
2008	135750
2009	141819
2010	140524
2011	137614
2012	128062.76
2013	117146.02
2014	111261.26
2015	137445.61
2016	168336.16
2017	189951.38
2018	142361.72
2019	128287.67
2020	126108.29
2021	130738.1
2022	152317.69