Year	metric tons
1961	37314040
1962	35018224
1963	36600409
1964	37350064
1965	41566188
1966	44139148
1967	44241723
1968	44456063
1969	47189498
1970	41322641
1971	51295448
1972	56271908
1973	54697027
1974	55604691
1975	54755880
1976	60494032
1977	57926590
1978	60727030
1979	56320928
1980	59359513
1981	57432196
1982	66006856
1983	61460962
1984	69416772
1985	63435998
1986	67554227
1987	64393196
1988	66573809
1989	70280804
1990	65874490
1991	71934131.61
1992	55532051.3
1993	70674726.91
1994	75279886.55
1995	80133728.86999999
1996	71697770.96000001
1997	86942159.47999999
1998	79227745.53
1999	75782501.07
2000	63008050.19
2001	84688565.99000001
2002	77474416.8
2003	63692393.97
2004	99059105.12
2005	88094731.15
2006	74034451.82
2007	66934778.38
2008	91143023.05000001
2009	86024254.52999999
2010	81280936.85
2011	89668739.39
2012	79411882.07
2013	94100902.67
2014	105877821.22
2015	96099251.57000001
2016	103432662.33
2017	105791344.31
2018	104691470
2019	111572940
2020	106227850
2021	113891010
2022	98296740