Year	metric tons
1961	726079
1962	895048
1963	918153
1964	1010600
1965	953407
1966	1000000
1967	1035155
1968	1084696
1969	1037041
1970	1065118
1971	883608
1972	880284
1973	831365
1974	1086580
1975	1254319
1976	995823
1977	1109843
1978	1169854
1979	1180823
1980	1047988
1981	1270034
1982	1209967
1983	1119418
1984	1089368
1985	1583270
1986	1889857
1987	1637101
1988	2100562
1989	1951671
1990	1517900
1991	2454900
1992	2478600
1993	2527355
1994	2232037
1995	2307988
1996	2481805
1997	2013552
1998	2656756
1999	2699886
2000	2279246.55
2001	3109092
2002	3119050
2003	3564281
2004	2901973
2005	3649533
2006	3680674
2007	3108811
2008	4358518
2009	3626638
2010	4560546
2011	3666404
2012	4898544
2013	4869722
2014	4469300
2015	4189665
2016	4567066
2017	4063197
2018	5180701.81
2019	4939629.91
2020	5179104
2021	4661140
2022	5179059.02