Year	metric tons
1961	3167000
1962	3177026
1963	3181578
1964	3280500
1965	3335000
1966	3126325
1967	3165429
1968	3291912
1969	3416913
1970	3555902
1971	3450714
1972	3216502
1973	3708825
1974	3755148
1975	3851585
1976	3733322
1977	3534858
1978	3648730
1979	3193100
1980	3792060
1981	3933530
1982	3221180
1983	4310790
1984	4309680
1985	4373360
1986	3999390
1987	4759120
1988	5306800
1989	5672510
1990	5847090
1991	4882080
1992	5812440
1993	5183210
1994	6047242
1995	6209613
1996	6308630
1997	6409270
1998	6524470
1999	6972123
2000	7063809
2001	7087917
2002	7220675
2003	7690125
2004	7588163
2005	7694042
2006	7135304
2007	7955234
2008	8301486
2009	7622561
2010	8207431
2011	9227353
2012	8889977
2013	9122829
2014	9304245
2015	8776707
2016	9545530.84
2017	9680490.82
2018	10511825
2019	10566025
2020	11006495.78
2021	10627427
2022	11128373