Year	metric tons
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	33534.08
1993	31233.27
1994	22422.01
1995	20275.05
1996	21126
1997	20551.49
1998	27935.08
1999	25222.19
2000	27944.24
2001	29019.12
2002	30330.54
2003	29462.04
2004	43006.119999999995
2005	48535.09
2006	56723.13
2007	56360.63
2008	64791.08
2009	72117.05
2010	68545.81
2011	86000.06
2012	75611.28
2013	89552.54999999999
2014	94137.88
2015	90860.42000000001
2016	90614.65000000001
2017	87089.77
2018	90271.36
2019	85063.37
2020	93394.77
2021	89459.67
2022	90839.22