Year	metric tons
1960	8267945.01
1961	10175200
1962	12038496
1963	12352549
1964	15172411
1965	13900925
1966	15627895.01
1967	17479143
1968	18567472
1969	17201036
1970	20435724
1971	18752481
1972	13030107
1973	11414710
1974	13617993
1975	12876431
1976	13781653
1977	12505351.99
1978	14125192.01
1979	14729294.01
1980	14084464
1981	14440978.58
1982	15289942.64
1983	13466194.329999998
1984	15904051.45
1985	17514868.699999996
1986	19382881.22
1987	19038039.61
1988	21490233.44
1989	21735538.31
1990	21648914.65
1991	22136440.759999998
1992	23667521.99
1993	26104300.97
1994	29544412.84
1995	27457864.61
1996	28327388.06
1997	27254381.88
1998	23370039.37
1999	28193237
2000	30977922.130000003
2001	29271084.750000004
2002	30271327.650000002
2003	28112921.83
2004	31806564.700000003
2005	32063038.32
2006	30556757.939999998
2007	31105575.16
2008	31490839.44
2009	31047157.75
2010	29131702.77
2011	32666007.379999995
2012	30169484.490000002
2013	30979484.04
2014	29837081.199999996
2015	31228558.34
2016	30636434.219999995
2017	32072861.269999996
2018	35300264.540000014
2019	32862225.850000005
2020	32456722.419999998
2021	33934248.54
2022	32462115.959999997