Year	metric tons
1960	31823
1961	38713
1962	38563
1963	36463
1964	38023
1965	41573
1966	45093
1967	46373
1968	47763
1969	50563
1970	53532
1971	52182
1972	56852
1973	59650
1974	63999
1975	65490
1976	61411
1977	75415
1978	76607
1979	72800
1980	69658
1981	69328.79000000001
1982	69709.04000000001
1983	77034.15
1984	79237.07
1985	83675.82
1986	80005.9
1987	85598.03
1988	96946.66
1989	96159.61
1990	102806.18
1991	109532.54000000001
1992	114590.54000000001
1993	118635.94
1994	139415.02000000002
1995	136536.47999999998
1996	140151.15
1997	161632.59
1998	198633.69
1999	212397
2000	181490
2001	210486
2002	281233
2003	245739
2004	308395.5
2005	301875.5
2006	397429.74
2007	508906.99
2008	552370.13
2009	502409.67
2010	636313.24
2011	526674.7999999999
2012	356852.69
2013	242387.8
2014	354896.08
2015	356169.81
2016	320518.32999999996
2017	387552.31000000006
2018	353483.21
2019	334742.29000000004
2020	302504.19000000006
2021	304080.65
2022	321345.44