Year	% of total merchandise exports
1973	2.013422818791946
1974	0.1558846453624318
1975	0.808346649121158
1980	0.14644285579315341
1981	0.0014011685745912092
1982	6.973876507124589
1984	0.2671875474409708
1985	0.6891058627694896
1987	0.022859755400617212
1989	0.04307402229664868
1990	0.8847273068607227
1991	0.4611468782520497
1992	0.1732357309076987
1993	0.22571259268023572
1994	0.14017446900017336
1995	0.29481495167067795
1996	1.9107659886916262
1997	0.5275612563175628
1998	0.041208599327003895
1999	0.12204374848794416
2000	0.20753911441958053
2001	0.18939549472144357
2002	0.02952777199711544
2003	0.06864178224041668
2004	0.10975474376905667
2005	1.5128404550253522
2006	6.370288221380122
2007	2.8898857059916265
2008	3.094901667278519
2009	7.954140325972681
2010	7.1030794619251365
2011	6.665669319430327
2012	5.441001867659067
2013	59.90466650589447
2014	20.372744983929113
2015	17.06331442078803
2016	16.405155477048172
2017	34.683147716698834
2018	37.13314765259128
2019	47.10916406591931
2020	66.2548907556891