Year	metric tons
1960	103800
1961	101900
1962	101307
1963	130573
1964	168608
1965	205005
1966	250805
1967	240868
1968	223132
1969	202815
1970	214519
1971	228631
1972	237975
1973	302020
1974	296001
1975	232251
1976	281776
1977	402780
1978	541959
1979	580735
1980	400101
1981	374882
1982	488235
1983	428207
1984	322692
1985	419724
1986	422663
1987	461892
1988	496394
1989	494983
1990	561157
1991	642671
1992	745984
1993	985251
1994	1000460
1995	1176947
1996	1291387
1997	1390864
1998	1166429
1999	1088144
2000	923584
2001	932421
2002	947642
2003	911847
2004	946694
2005	931994
2006	1174508
2007	988366
2008	997783
2009	864556.95
2010	814403.35
2011	796501.25
2012	741018.42
2013	874530.12
2014	833937.71
2015	817962.65
2016	758899.48
2017	838628.76
2018	838592.31
2019	828687.19
2020	839673.99
2021	856252.8
2022	853774.74