Year	metric tons
1960	55645
1961	55278
1962	61336
1963	67099
1964	67532
1965	77276
1966	88908
1967	92457
1968	102837
1969	91079
1970	97197
1971	106169
1972	116297
1973	119490
1974	133002
1975	104200
1976	104577
1977	136571
1978	130603
1979	137912
1980	136873
1981	153148
1982	171926
1983	169101
1984	177014
1985	162845
1986	183734
1987	212829
1988	219446
1989	197279
1990	234541
1991	244070
1992	250134
1993	248620
1994	220397
1995	227721
1996	220000
1997	220461
1998	228009.44
1999	239333
2000	206380
2001	205227
2002	207516
2003	224550.23
2004	243559.05
2005	250986.28
2006	212900
2007	189661.31
2008	182817.7
2009	178111.49
2010	180130.4
2011	176324.68
2012	166872.31
2013	159328.39
2014	150778.51
2015	151858.15
2016	172583.51
2017	164651.95
2018	171113.12
2019	166127.6
2020	176495.69
2021	160776.53
2022	165059.23