Year	metric tons
1960	351678
1961	372796
1962	384268
1963	390210
1964	443471
1965	432425
1966	526461
1967	465264
1968	433488
1969	445790
1970	471277
1971	449636
1972	491569
1973	636961
1974	608853
1975	557857
1976	635712
1977	622444
1978	640513.8999999999
1979	706033.8
1980	755739.1
1981	786626.0800000001
1982	817201.64
1983	912461.24
1984	948127.88
1985	1022561.99
1986	1185739.55
1987	1179584.0499999998
1988	1324857.65
1989	1307083.3199999998
1990	1372183.06
1991	1441189.55
1992	1462317.81
1993	1581652.3199999998
1994	1749635.47
1995	1902136.6800000002
1996	1687743.21
1997	1905263.5099999998
1998	1867773.7000000002
1999	1946984.48
2000	2088034.93
2001	2353206.9899999998
2002	2214863.97
2003	2243786.72
2004	2241827.5700000003
2005	2350873.61
2006	2307940.94
2007	2198054.8200000003
2008	2249470.88
2009	2477220.6100000003
2010	2404482.91
2011	2268016.44
2012	2606828
2013	2728225.1799999997
2014	2860395.42
2015	2812572.84
2016	2932074.1199999996
2017	2976065.2
2018	3028433.5200000005
2019	3142400.5
2020	3007544.15
2021	3082093.24
2022	2506507.09