Year	metric tons
1961	44162267
1962	43230233
1963	47902086
1964	45236386
1965	49162960
1966	53462221
1967	53758405
1968	52468024
1969	55191847
1970	50210410
1971	62939700
1972	64773083
1973	59332794
1974	60848975
1975	65407470
1976	74463449
1977	70823095
1978	72637672
1979	70931949
1980	70649623
1981	70973363
1982	78616214
1983	73254799
1984	81039900
1985	76115234
1986	83657136
1987	80532961
1988	83499001
1989	79396170
1990	84411378
1991	87677269.61
1992	257719152.39000002
1993	259153083.34
1994	220342125.62
1995	204282130.42000002
1996	194139066.98000002
1997	241076548.25
1998	182375408.76000002
1999	190145108.84
2000	189982607.09000003
2001	243290131.07999998
2002	245029518.32999998
2003	203966389.08
2004	254751922.98000002
2005	245423232.37
2006	241093130.56
2007	229940025.04999998
2008	295898337.9
2009	287436630.23
2010	232417233.06000003
2011	303973286.31
2012	245088909.22000003
2013	308129579.11
2014	323274293.92
2015	315716078.48
2016	343467762.40999997
2017	354660339.75000006
2018	341871747.51
2019	357601037.37
2020	357630435.84
2021	368254681.29999995
2022	368919810.02