Year	metric tons
1961	369826110
1962	393759466
1963	423890758
1964	446306578
1965	440993211
1966	458655367
1967	494874344
1968	502514220
1969	514387992
1970	557877054
1971	576053300
1972	558063474
1973	592459193
1974	607403628
1975	650457251
1976	662831982
1977	665743538
1978	712388740
1979	713341912
1980	736942775
1981	779558965
1982	799572104
1983	851478529
1984	885545000
1985	881321484
1986	902683137
1987	895676180
1988	932666713
1989	971509849
1990	1000679946.56
1991	1007226761.56
1992	1216031353.0099998
1993	1231313897.8500001
1994	1197264550.26
1995	1202081568.82
1996	1263564071.69
1997	1297557893.5700002
1998	1271886950.3600001
1999	1294023324.4299998
2000	1272203397.33
2001	1324366703.4200003
2002	1302278988.7900002
2003	1311408347.57
2004	1383976511.4400003
2005	1420587621.62
2006	1458210182.5999997
2007	1503024417.5900004
2008	1619843591.85
2009	1580191857.6800003
2010	1591363820.1800005
2011	1710794203.7900002
2012	1706261311.1299999
2013	1803573685.7599998
2014	1832463272.06
2015	1882040564.1599998
2016	1896653938.5099998
2017	1991924683.04
2018	1970003329.3500001
2019	2004688613.4199998
2020	2045837565.95
2021	2079928855.0100002
2022	2107299203.4800003