Year	% of total merchandise exports
1962	0.037601052829479224
1963	0.055391432791728215
1965	0.9305030532131433
1966	0.14764338444065872
1967	0.04269574356279558
1968	0.04145408163265306
1971	0.6723195544194359
1972	2.7716730571401853
1973	0.13084537490044373
1974	4.81118373275236
1975	0.8694762068197281
1976	1.8019377769122158
1977	1.2255129514436913
1978	1.6860294596884575
1979	2.570846701650143
1980	2.3408159781495392
1981	1.5359311740890689
1982	1.66550072647043
1983	2.4359427644440745
1984	3.422749125874126
1985	3.7422037422037424
1986	2.3670596017103303
1987	1.7553262762963957
1988	1.6698413581190996
1989	1.9886123233519903
1990	1.7274162508498794
1991	1.964025922497024
1992	3.656798508949375
1993	4.147336514228509
1994	3.9300025350995043
1995	4.607573513856568
1996	4.803007703871277
1997	5.054951206007069
1998	4.217996941012628
1999	3.7977225980292286
2000	6.186557019714582
2001	6.47796582947939
2002	8.127929297624842
2003	10.043892478884775
2004	12.108707489522248
2005	12.984756009983972
2006	10.544127278505917
2007	16.91847137705459
2008	14.566519654474478
2009	24.75616856865325
2010	26.102278543177487
2011	24.555702135724218
2012	24.847387806155204
2013	26.51677618822404
2014	25.802231893036492
2015	27.841163541874792
2016	29.81032725185476
2017	29.070781129999336
2018	34.6219923751228
2019	33.853495482601254
2020	40.33193459431467