Year	metric tons
1960	1116557.01
1961	911641
1962	919532
1963	985873
1964	1255504
1965	1258353
1966	1286639.01
1967	1311378
1968	1427129
1969	1495679
1970	1636829
1971	1716303
1972	1485142
1973	1787620
1974	2064670
1975	2053375
1976	1938973
1977	2049754.99
1978	2014855.01
1979	2015210.01
1980	2080157
1981	2041720
1982	1916381
1983	2003865.5
1984	2302519.1
1985	2206097.6
1986	2321272.89
1987	2206075
1988	2307632
1989	2713689
1990	2862586
1991	2907233
1992	2929102.01
1993	3150212
1994	3347607
1995	3357739.99
1996	3542948
1997	3620948
1998	3473492
1999	3552149
2000	3726427
2001	3817092
2002	3783853
2003	3757899
2004	3426509
2005	3725361.99
2006	3877337
2007	3890293
2008	4128727
2009	4094756
2010	4715816
2011	4336132
2012	4895142.41
2013	4665438.43
2014	4999493.43
2015	4862038.51
2016	5196946.01
2017	5550953.01
2018	5336183
2019	5477100.02
2020	4658197.01
2021	5024904.98
2022	5539024.95