Year	metric tons
1960	2794
1961	4776
1962	6531
1963	8001
1964	9893
1965	11813
1966	13573
1967	16711
1968	20473
1969	22748
1970	28632
1971	35443
1972	31224
1973	29074
1974	41786
1975	51088
1976	56653
1977	60543
1978	64228
1979	70479
1980	74640
1981	83584
1982	87547
1983	89848
1984	96900
1985	104301
1986	107130
1987	110616
1988	131499
1989	132971
1990	153744
1991	175193
1992	170377
1993	166320
1994	176421
1995	214725
1996	189373
1997	195719
1998	208625
1999	210368
2000	216525
2001	218330
2002	184285
2003	191884
2004	118217
2005	182443
2006	173586
2007	181126
2008	149002.76
2009	162431.5
2010	153493.71
2011	164150.7
2012	137041
2013	140879
2014	148730.35
2015	148762.6
2016	156460
2017	156625
2018	145000.18
2019	132377.8
2020	125790.26
2021	145861.9
2022	132660.9