Year	metric tons
1960	48103
1961	59628
1962	73471
1963	71614
1964	91125
1965	74632
1966	79973
1967	82237
1968	98302
1969	95060
1970	89241
1971	74985
1972	91877
1973	96548
1974	100489
1975	109235
1976	131663
1977	136165
1978	156107
1979	164790
1980	183447
1981	201951
1982	201239
1983	205500
1984	162502
1985	177659
1986	183998
1987	187154
1988	205574
1989	220486
1990	183923
1991	211801
1992	206463.08
1993	232200.89
1994	248716.67
1995	237885.92
1996	263818.31
1997	274186.84
1998	289689.86
1999	314072.7
2000	301169.6
2001	271160
2002	275253
2003	323221.2
2004	336857.4
2005	220967
2006	284255
2007	313136
2008	331362
2009	344490.68
2010	398245.14
2011	433676.92
2012	459690.37
2013	492110.89999999997
2014	527716.98
2015	503502
2016	517399.6
2017	501656.62999999995
2018	510201.19
2019	505801.79
2020	424605.7
2021	423428.76
2022	391702.99