Year	metric tons
1961	951868
1962	1061828
1963	1076631
1964	1100142
1965	795199
1966	1011504
1967	1190706
1968	1385641
1969	1412377
1970	1644193
1971	1421355
1972	1342614
1973	1353723
1974	1650815
1975	1211357
1976	1306398
1977	1719023
1978	1932237
1979	1955033
1980	2170390
1981	2265866
1982	2192543
1983	2528616
1984	2467570
1985	2702001
1986	2638561
1987	2177294
1988	2523913
1989	2101237
1990	2578860
1991	2429895
1992	2373882
1993	2609310
1994	2722454
1995	2850089
1996	2098777
1997	2268861
1998	2730821
1999	2893630
2000	2896040
2001	2728140
2002	2890180
2003	3106450
2004	2668240
2005	3294530
2006	3396030
2007	3193100
2008	4017620
2009	3788070
2010	4469740
2011	4038207
2012	4054851
2013	4837225
2014	3625675
2015	5051180.51
2016	4672771
2017	2579086
2018	4200098
2019	4837907
2020	5434886.5
2021	5622708.9
2022	3652343