Year	metric tons
1960	16650
1961	21800
1962	20804
1963	26060
1964	21676
1965	23201
1966	26193
1967	28207
1968	28484
1969	30127
1970	22660
1971	25870
1972	28289
1973	30674
1974	42347
1975	45273
1976	50033
1977	55738
1978	56424.8
1979	59749.1
1980	61123.5
1981	58067.5
1982	63806
1983	68111.3
1984	75855.16
1985	89825.51
1986	91402.84
1987	97716.5
1988	100176.16
1989	93937.5
1990	85236.52
1991	86513.55
1992	87347
1993	83417.25
1994	86946.81
1995	84215.71
1996	84885.01
1997	88265.31
1998	89939.6
1999	93490.23
2000	96223.83
2001	99394.09
2002	98707.57
2003	92348.12
2004	112679.67
2005	111756.31
2006	114249.54
2007	107483.19
2008	100238.75
2009	99080.81
2010	98625.8
2011	109434.6
2012	117381
2013	121760
2014	126183
2015	131595
2016	125930
2017	129829.99
2018	136949.19
2019	155205.2
2020	145453.1
2021	150342.65
2022	149631.44