Year	% of total merchandise exports
1960	10.466760961810467
1961	6.233062330623306
1962	5.8165548098434
1963	1.6839378238341969
1964	1.7361111111111112
1965	2.6775320139697323
1966	2.931228861330327
1967	1.8240343347639485
1968	4.509803921568627
1969	2.3032881075741387
1970	8.272957691557808
1971	8.457293933295212
1972	5.510897161132909
1973	7.3986581235303
1974	3.4827533944921414
1975	6.924281944623996
1976	6.933372339647481
1977	11.777154308617234
1978	18.582422457285034
1979	19.90020707294151
1980	7.418210891459373
1981	21.402522906013964
1982	13.76046999361705
1983	3.040483207902001
1984	0.1547686347923598
1985	8.187425350499423
1986	5.9540012003109
1987	2.197418175894288
1988	2.038171145683818
1989	5.950551447543336
1990	1.2646419886362277
1991	1.4970964272604466
1992	2.0583154130486623
1993	1.7339945221971151
1994	3.0979923986357134
1995	4.08492539129705
1996	3.080128478257037
1997	5.307876933632841
1998	5.528106664338365
1999	8.467961653192281
2000	3.3783547832502308
2001	4.143291828471347
2002	3.3066777799918836
2003	2.8823368176532407
2004	3.667581097142864
2005	8.324774555202676
2006	5.593921516727294
2007	5.475508013884317
2008	5.814706824121629
2009	10.885171867600981
2010	14.150090516110694
2011	17.840886849737974
2012	21.53318677901186
2013	13.940200878229641
2014	11.983428012723953
2015	16.606132247744636
2016	14.436396094943913
2017	14.345378043915924
2018	19.722412621824365
2019	13.098351792783427
2020	14.282715534290718