Year	metric tons
1960	629985
1961	734064
1962	847335
1963	797444
1964	989173
1965	1217833
1966	1260336
1967	915201
1968	617356
1969	707209
1970	748800
1971	699881
1972	741506
1973	922000
1974	954849
1975	1001791
1976	1015137
1977	1393432
1978	1579019
1979	1661093
1980	1524774
1981	1449847
1982	801719
1983	855025
1984	1551637
1985	1695450
1986	1668515
1987	1644279
1988	1771451
1989	1516866
1990	1521354
1991	1055867
1992	1583211
1993	1726884
1994	1570944
1995	1624389
1996	2074579
1997	2225449
1998	1699721
1999	1754408
2000	2000046
2001	2003941
2002	2149508
2003	2008658
2004	1755172
2005	1685753
2006	1348043
2007	1421057
2008	1306593
2009	1164432
2010	1081655
2011	1164914
2012	1466751
2013	1380229
2014	1095508
2015	1347485
2016	1092966
2017	1203786
2018	1279500
2019	1066888
2020	1039086.19
2021	1171229.4
2022	1434724.47