Year	metric tons
1960	29800
1961	43300
1962	52000
1963	47700
1964	50300
1965	53500
1966	59200
1967	86200
1968	83600
1969	57600
1970	54500
1971	37700
1972	110700
1973	105300
1974	62418
1975	66575
1976	75109
1977	63972
1978	79590
1979	63411
1980	76224
1981	94731
1982	71442
1983	57639
1984	79289
1985	71696.32
1986	83645.48
1987	86068.34
1988	89930.34
1989	97732.3
1990	130129
1991	115802
1992	168235
1993	148940.5
1994	125420.5
1995	167636
1996	160089
1997	191763
1998	180549
1999	180373
2000	198847
2001	203824
2002	181959
2003	191042
2004	172564
2005	182002
2006	174129
2007	188220
2008	181092
2009	187073
2010	161535
2011	171172
2012	161658
2013	160104
2014	184881
2015	177808
2016	176066
2017	206746.5
2018	214337.22
2019	283097.95
2020	271273.45
2021	322551.18
2022	312511.99