Year	metric tons
1960	950490
1961	956920
1962	1043490
1963	1052930
1964	1241700
1965	1207979
1966	1347070
1967	1357756
1968	1441423
1969	1611149
1970	1644285
1971	1698679
1972	2063757
1973	2031688
1974	1963623
1975	1730624
1976	1653638
1977	1740960
1978	1748409
1979	1766997
1980	1705726
1981	1701060
1982	1719504
1983	1783448
1984	1831598
1985	1804142
1986	1931315
1987	2007080
1988	2054031
1989	2161129
1990	2304390
1991	2208349
1992	2374933
1993	2327192
1994	2334519
1995	2526416.74
1996	2599479.95
1997	2691529.66
1998	2708229.48
1999	2845874.94
2000	3041114.91
2001	3049784.8200000003
2002	3085282.83
2003	3219554.5
2004	3364767.5700000003
2005	3454518.5
2006	3547566.5
2007	3706399
2008	3937929.5
2009	4064637.0500000003
2010	4245135.89
2011	4527118.16
2012	4730932.87
2013	4933965.05
2014	5165369.11
2015	5152586.42
2016	5252116.859999999
2017	5870821.539999999
2018	5725303.91
2019	5917497.020000001
2020	5660965.78
2021	6123921.92
2022	5759628.390000001