Year	metric tons
1961	73335001
1962	75516656
1963	79099491
1964	80900639
1965	80406261
1966	74212018
1967	84868377
1968	86027731
1969	92578124
1970	91358984
1971	88675395
1972	86398508
1973	90407932
1974	96372241
1975	99054243
1976	100656768
1977	101225506
1978	102830090
1979	101087721
1980	114077219
1981	119017817
1982	115621113
1983	119534818
1984	115116945
1985	128014903
1986	135538028
1987	128556573
1988	143098531
1989	144214287
1990	142496261.97
1991	146431011.44000003
1992	152835536.29000002
1993	162117019.76999998
1994	162180965.96999997
1995	171819565.97
1996	179658561.92
1997	174762336.08999994
1998	185463727.22
1999	193142982.71000004
2000	194803942.10000002
2001	198858424.61000007
2002	203955326.17999998
2003	218700817.32000005
2004	216639234.08999997
2005	241203314.96999997
2006	252886501.27
2007	259573767.99
2008	269470971.04999995
2009	275469514.97999996
2010	290585138.92
2011	285648351.85999995
2012	292303618.9500001
2013	300546462.77000004
2014	315776378.0700001
2015	312651576.97
2016	323187924.7200001
2017	329213304.87
2018	338242387.72999996
2019	339914892.5399999
2020	354044694.83
2021	357810973.06
2022	352416347.88