Year	metric tons
1960	40500
1961	42100
1962	43600
1963	45600
1964	54600
1965	59500
1966	60800
1967	66100
1968	68400
1969	67400
1970	64302
1971	77530
1972	75199
1973	60763
1974	66690
1975	58590
1976	75917
1977	67054
1978	65012
1979	73621
1980	70068
1981	75586
1982	73753
1983	79858
1984	73701
1985	101927
1986	103648
1987	101682
1988	89506
1989	99171
1990	95100
1991	83108
1992	87345
1993	70174
1994	74095
1995	70575
1996	73839
1997	67617
1998	73390
1999	79273
2000	81520
2001	77030
2002	70676
2003	69769
2004	55267
2005	43531
2006	55696
2007	48590
2008	45089
2009	44233
2010	49738
2011	55862
2012	56233.2
2013	65066.01
2014	78556.81
2015	102559.95
2016	108944.32
2017	99748.74
2018	113787.03
2019	115014.87
2020	80009.14
2021	109992.91
2022	106143.34