Year	metric tons
1960	87100
1961	85100
1962	80100
1963	80100
1964	83600
1965	89700
1966	91000
1967	93200
1968	99900
1969	94200
1970	85099
1971	94164
1972	92049
1973	103346
1974	92278
1975	94936
1976	105962
1977	106867
1978	100871
1979	103282
1980	105651
1981	101460.18
1982	104637.8
1983	99847.4
1984	105998.8
1985	112584.9
1986	122552
1987	132002.4
1988	119599.3
1989	131797.5
1990	132381
1991	138644.9
1992	152611.8
1993	159100.5
1994	181124.9
1995	151716.5
1996	151051.2
1997	156978.1
1998	110146.4
1999	120591.75
2000	99343.7
2001	94196.4
2002	96078.9
2003	93781.4
2004	93891.4
2005	92430.5
2006	98239.7
2007	96095.8
2008	85885.3
2009	83181.8
2010	70179.8
2011	63246.49
2012	61044.2
2013	64169.77
2014	61260.7
2015	65371.82
2016	75534.5
2017	78315.3
2018	77716.2
2019	83173.7
2020	71476.01
2021	59631.87
2022	65494.8