Year	metric tons
1960	973422
1961	981654
1962	1069186
1963	1078420
1964	1266957
1965	1235193
1966	1376091
1967	1390406
1968	1480907
1969	1656416
1970	1696897
1971	1761300
1972	2103613
1973	2068217
1974	2010596
1975	1772203
1976	1692333
1977	1785441
1978	1794902
1979	1799182
1980	1738204
1981	1766226
1982	1781305
1983	1872890
1984	1905207
1985	1882231
1986	2023531
1987	2111173
1988	2143303
1989	2236099
1990	2382089
1991	2263065
1992	2426060
1993	2377496
1994	2376120
1995	2556146.74
1996	2621460.95
1997	2724483.66
1998	2759471.48
1999	2913858.94
2000	3095167.91
2001	3101754.8200000003
2002	3105725.83
2003	3297496.5
2004	3515472.5700000003
2005	3608855.5
2006	3510463.5
2007	3698731.5
2008	3824721.5
2009	3967491
2010	4121515.99
2011	4449889.89
2012	4637478.609999999
2013	4807694.64
2014	4906894.859999999
2015	4867322.8100000005
2016	5238274.89
2017	6042246.170000001
2018	6090207.0600000005
2019	6034906.970000001
2020	5739001.19
2021	6206627.65
2022	5880366.219999998