Year	metric tons
1961	316977
1962	329847
1963	268717
1964	417451
1965	374753
1966	404945
1967	371725
1968	322496
1969	337356
1970	396724
1971	367477
1972	329421
1973	384248
1974	502047
1975	532083
1976	414938
1977	626422
1978	589452
1979	532032
1980	592262
1981	606275
1982	644570
1983	555998
1984	647181
1985	601131
1986	618579
1987	566150
1988	542974
1989	553663
1990	410172
1991	553796.4
1992	622935.27
1993	629492.07
1994	664423.32
1995	810689.74
1996	860277.4299999999
1997	866753.66
1998	783971.63
1999	816380.62
2000	674891.37
2001	755307.65
2002	669777.26
2003	812450.13
2004	743054.2
2005	668980.12
2006	720073
2007	725612.85
2008	763691.41
2009	885045.97
2010	895924.47
2011	961916.35
2012	980340.02
2013	1213505.79
2014	1362977.5199999998
2015	1421505.28
2016	1206071.0599999998
2017	1391961.07
2018	1350930.32
2019	1423206.23
2020	1433360.12
2021	1273914.51
2022	1356218.8599999999