Year	metric tons
1960	25500
1961	30400
1962	21500
1963	16900
1964	17300
1965	18300
1966	20350
1967	21150
1968	18250
1969	23150
1970	24234
1971	23715
1972	28313
1973	31243
1974	35758
1975	37693
1976	35122
1977	43475
1978	34143
1979	38678
1980	48000
1981	56000
1982	64500
1983	65002
1984	65595.9
1985	66141.6
1986	65511.8
1987	94367.8
1988	106741.3
1989	99555.42
1990	90603.24
1991	79852
1992	95420.91
1993	102199.97
1994	135798.86
1995	106247.67
1996	82317.8
1997	91907.4
1998	92620
1999	102649
2000	113510.9
2001	134082
2002	134800.8
2003	141376
2004	114050.2
2005	126628.3
2006	146051.8
2007	147768.13
2008	141642.34
2009	129940.23
2010	95222.75
2011	104060.63
2012	108187.4
2013	103165.89
2014	100163.06
2015	97131.18999999999
2016	101964.45
2017	108342.63
2018	120166.41
2019	105388.57
2020	76954.71
2021	83979.29
2022	85998