Year	metric tons
1961	47397095
1962	48303727
1963	53129887
1964	59751971
1965	57638446
1966	59362843
1967	64191784
1968	62266099
1969	64675807
1970	71363842
1971	72458035
1972	67956173
1973	74888690
1974	78437212
1975	80551648
1976	86759325
1977	86545411
1978	85838020
1979	84003832
1980	88442972
1981	103512975
1982	105255823
1983	99584208
1984	106319887
1985	109998151
1986	105465865
1987	111733285
1988	107990814
1989	105743090
1990	98081777
1991	103537242.95
1992	117959324.27000001
1993	115632542.77999999
1994	118626268.63
1995	125795157.73
1996	119709414.69000001
1997	133989702.27000003
1998	133155818.96000001
1999	130951762.36999999
2000	137706027.52
2001	151525730.56
2002	141769636.23999998
2003	160748443.72
2004	160902819.87
2005	157479097
2006	155190646.88
2007	178310341.52
2008	195630282.06000003
2009	164262722.60999998
2010	187012052.8
2011	194410883.16
2012	209536621.46
2013	225329011.28
2014	227681018.38000003
2015	237178010.18999997
2016	223843418.67999998
2017	271339498.47
2018	249082880.68
2019	280877170.1999999
2020	288607256.75
2021	277716854.71000004
2022	303954687.13