Year	metric tons
1960	31603820.01
1961	35242623
1962	38260911
1963	38863197.1
1964	42900257.1
1965	43331452.4
1966	47033379.809999995
1967	50024444
1968	52974570
1969	51023009
1970	56084158
1971	56190637
1972	51364110
1973	51026298
1974	53884233
1975	52471059
1976	55749796
1977	55198859.99
1978	57569438.01
1979	58127432.510000005
1980	58107198
1981	60294567.03
1982	61825610.739999995
1983	61829336.36999999
1984	66840731.42999999
1985	68511982.44999999
1986	73396060.92000002
1987	74048955.72
1988	77334205.2
1989	78086506.12999998
1990	75279109.32000001
1991	75200542.49000001
1992	85890535.42999999
1993	87200500.45
1994	92858972.52000001
1995	92879654.82000001
1996	94578276.89
1997	93952919.25999999
1998	86329086.01999998
1999	92305987.55
2000	94111920.92999999
2001	91342725.08
2002	91723724.59
2003	88932377.6
2004	93599321.46000004
2005	93215190.36000001
2006	90833495.5
2007	91101847.14999999
2008	90282488.14
2009	89661162.45
2010	87728529.67999999
2011	92212318.37000002
2012	89295688.60999997
2013	90498511.60999997
2014	91092327.18000002
2015	92210703.81000003
2016	90216992.35
2017	94016976.22999999
2018	96877059.99999994
2019	92806853.89
2020	90338637.43000002
2021	92101202.43999997
2022	87988165.97