Year	% of total merchandise exports
1982	0.2614948790690131
1987	0.28967403186144103
1988	0.3927901002132722
1989	0.19924325069348373
1990	0.7335414915667468
1991	0.00019020872210969865
1994	0.3164178123533345
1995	1.8756336443092534
1996	1.640312521396653
1999	0.11477126861239634
2000	0.20868048480636248
2003	0.9204510980840556
2008	0.5317824643263762
2010	0.01070373973941774
2014	0.7281787924060688
2016	0.37687680231815246
2017	0.29972023456008506
2018	1.2039709723906384
2019	0.3517479582210176