Year	metric tons
1960	65500
1961	67000
1962	64900
1963	80500
1964	62900
1965	73250
1966	70990
1967	74090
1968	92800
1969	87300
1970	81699
1971	91401
1972	89003
1973	100000
1974	111778
1975	111336
1976	119459
1977	117831
1978	139166
1979	133672
1980	164900
1981	155094
1982	163952
1983	175193
1984	178894
1985	179188
1986	167430
1987	166189
1988	175631
1989	165108
1990	151535
1991	138591
1992	169662
1993	173823
1994	180951
1995	184830
1996	196738
1997	196526
1998	187713
1999	176017
2000	171828
2001	165716
2002	157434
2003	134432
2004	148243
2005	146088
2006	162337
2007	177702
2008	162105
2009	168253
2010	167869
2011	164977
2012	174980
2013	181400
2014	196421
2015	197742
2016	207293.17
2017	205211.9
2018	189364.09000000003
2019	179213.09
2020	163621.9
2021	147681.4
2022	138964.6