Year	% of merchandise exports
1974	5.962014777833315
1975	5.252134957105755
1976	6.268933310828927
1977	5.82840453670216
1978	7.253212002840695
1979	4.767550521550047
1980	4.313521413961039
1981	3.292060412393248
1982	7.680725740104307
1983	4.661524084174167
1984	5.917478669132308
1985	2.76334956956626
1986	6.952619752788582
1987	4.005644600047907
2000	8.637656853077946
2001	6.226343177162175
2002	13.051280908493586
2003	14.019658633567783
2004	14.689120656631408
2005	13.393588877048531
2006	17.38860772047473
2007	20.796822647708147
2008	21.95563141514851
2009	27.347407557094577
2010	21.017194692250882