Year	metric tons
1960	155641
1961	168011
1962	189845
1963	220141
1964	213602
1965	230008
1966	273509
1967	344311
1968	383208
1969	349602
1970	341748
1971	368506
1972	359450
1973	444767
1974	525366
1975	474267
1976	516339
1977	622301
1978	688729
1979	699496
1980	740265
1981	800654
1982	732408
1983	795251
1984	802801.4
1985	797307.4
1986	822770.3
1987	911067.57
1988	876258.18
1989	943787.09
1990	1008997.2
1991	979921.79
1992	1105678.76
1993	1154285.14
1994	1182006.49
1995	1249207
1996	1243317
1997	1284326
1998	1290583
1999	1422903
2000	1461295
2001	1415881
2002	1463643
2003	1483281
2004	1541989
2005	1434098
2006	1518694
2007	1658042
2008	1756909
2009	1874005.3
2010	2018698.92
2011	1909573.35
2012	2116237.11
2013	2023321.8
2014	1989740.47
2015	2003019.18
2016	1992258.1
2017	1901885.53
2018	1855008.8699999999
2019	1877376.18
2020	1791561.76
2021	1755709.0599999998
2022	1892540.81