Year	metric tons
1961	87376496
1962	87257552
1963	90373008
1964	93706000
1965	79699504
1966	80137608
1967	95453504
1968	102443708
1969	106291244
1970	113909504
1971	113238296
1972	108615456
1973	119648216
1974	106793000
1975	127807800
1976	121625108
1977	138062904
1978	142964696
1979	126470304
1980	140490600
1981	147583816
1982	136101404
1983	166781704
1984	164477600
1985	165682196
1986	164955216
1987	156114500
1988	183867008
1989	199413216
1990	193919312
1991	193101196
1992	201468404
1993	208626900
1994	211941400
1995	210012500
1996	218750900
1997	223232400
1998	226877000
1999	236205608
2000	234931192
2001	242963796
2002	206636708
2003	236592700
2004	229845504
2005	239997492
2006	242785588
2007	260485904
2008	266835300
2009	250783392
2010	267838308
2011	287860000
2012	293290000
2013	295669510
2014	297113510
2015	285997000
2016	295359000
2017	311418745
2018	321556400
2019	324960800
2020	342108890
2021	355110300
2022	355088430