Year	metric tons
1961	30587971
1962	32274374
1963	31779334
1964	32275508
1965	32676802
1966	30310927
1967	34797575
1968	33985259
1969	37465724
1970	35481396
1971	35005494
1972	34974305
1973	36028596
1974	40366082
1975	39861822
1976	41140790
1977	39643486
1978	39862038
1979	37316020
1980	39037876
1981	41516278
1982	40596305
1983	40700968
1984	38976515
1985	50002989
1986	52815685
1987	49969276
1988	58641911
1989	56728907
1990	54717531.05
1991	59925105.96999999
1992	59575749.13
1993	62484782.25
1994	63253463.69
1995	65657678.080000006
1996	68009247.16
1997	63941358.38
1998	70760047.15
1999	68574351.3
2000	62776283.019999996
2001	68410258.94
2002	73254282.35000002
2003	79832571.83999999
2004	77132853.25999999
2005	87168820.82000001
2006	93246587.36999999
2007	93372069.6
2008	96959240.49000001
2009	93038091.53999999
2010	107332683.73
2011	99087001.87
2012	107964487.91000003
2013	109967641.94999999
2014	124045931.56
2015	114248029.87
2016	125697429.26000004
2017	123544851.43000002
2018	130646336.69
2019	129908741.43
2020	140454621.61999997
2021	135129861.83000004
2022	133810467.41