Year	metric tons
1960	49850
1961	54200
1962	58790
1963	60300
1964	62430
1965	65581
1966	63412
1967	66960
1968	110330
1969	115320
1970	133224
1971	124787
1972	131778
1973	124496
1974	138184
1975	145947
1976	151170
1977	153638
1978	156127
1979	182549
1980	186797
1981	174598
1982	171880
1983	180742
1984	192036
1985	190295
1986	204436
1987	217666
1988	227390
1989	232985
1990	224239
1991	220288
1992	220183
1993	217545
1994	211010
1995	194999
1996	183856
1997	186000
1998	180000
1999	127780
2000	157012
2001	173972
2002	169790
2003	157444
2004	167544
2005	161964
2006	154536
2007	154147
2008	158126
2009	158965
2010	168010
2011	170720
2012	155230
2013	170129
2014	160789
2015	145193
2016	142775
2017	127554
2018	124299
2019	122929
2020	119428
2021	115178.98
2022	77199.98