Year	% of total merchandise exports
1960	12.51859127262523
1961	9.192048611551588
1962	9.731803593167816
1963	10.202284783517863
1964	9.996696134477338
1965	10.301159847781358
1966	12.187768067198341
1967	15.615938605989696
1968	15.028463521206357
1969	15.078494000419292
1970	14.552810209068696
1971	13.658550536732319
1972	14.839411373602513
1973	13.998447351977733
1974	19.106863953966297
1975	24.22518223294352
1976	23.59015466630171
1977	22.8315984981854
1978	23.440527647119275
1979	25.72297402219441
1980	27.186131386861312
1981	34.61361292509644
1982	32.31500279082633
1983	28.334776981183683
1984	24.1653272786465
1985	23.731039013480494
1986	24.57379517552595
1987	22.199946238425973
1988	24.550254735122422
1989	21.32104264059024
1990	19.163011769308614
1991	20.81168752126384
1992	44.08674567618795
1993	43.14711473600295
1994	33.104422365088645
1995	30.038084132438502
1996	29.220082674899274
1997	24.892089762239763
1998	18.035208074500545
1999	18.364950910684946
2000	19.979284204105014
2001	15.597582877641047
2002	14.440034092908444
2003	15.47737086199602
2004	17.406066666112142
2005	21.020751902096276
2006	22.001796210868125
2007	23.05549108246155
2008	26.010802660238703
2009	22.346948558097683
2010	24.65997733093926
2011	25.02872325218658
2012	25.9532228280213
2013	25.87186034198854
2014	24.920857707748524
2015	22.119157205626568
2016	21.72438609588182
2017	21.32774785284959
2018	19.587138803149394
2019	20.301515028285486
2020	18.960451888140977