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	26732.08
1993	26630.27
1994	17481.01
1995	16268.05
1996	18237
1997	17041.49
1998	21946.08
1999	18909.19
2000	21068.24
2001	18551.12
2002	21235.54
2003	19957.04
2004	30172.12
2005	34693.09
2006	37876.13
2007	40225.63
2008	49062.08
2009	55788.5
2010	52867.3
2011	71396.06
2012	64389.18
2013	75832.34
2014	80369.89
2015	73985.57
2016	73345.6
2017	69975.36
2018	70591.05
2019	64620.4
2020	71676.5
2021	62449.34
2022	63683.17