Year	metric tons
1960	95250
1961	101198
1962	107672
1963	114759
1964	122500
1965	132677
1966	140301
1967	150530
1968	160079
1969	174634
1970	189015
1971	207660
1972	225633
1973	247099
1974	267072
1975	291352
1976	319938
1977	347379
1978	383293
1979	421631
1980	463044
1981	510933
1982	562836
1983	620744
1984	699732
1985	769276
1986	844245
1987	969045
1988	1082101
1989	1205503
1990	1230388
1991	1461228
1992	1647921
1993	1680226
1994	1811505
1995	2004335
1996	2165994
1997	2381637
1998	2520432
1999	2768350
2000	2631909
2001	2911566
2002	3063250
2003	3268572
2004	3820260
2005	3963112.97
2006	4228243
2007	4226668
2008	5032223
2009	5037200.68
2010	5277221.14
2011	5389065.22
2012	6129776.1
2013	6571511.1
2014	7071827.3
2015	7645220.75
2016	8148238.22
2017	8795825.26
2018	9917360.080000002
2019	10696521.76
2020	11516179.9
2021	12358140.22
2022	13289651.169999998