Year	% of merchandise exports
1966	5.603517884326402
1968	7.586009349790662
1969	7.644147059843164
1970	6.741344430506587
1971	8.565805370280657
1973	3.2553057013595477
1974	2.0063158558327054
1975	2.180878140091257
1976	0.8768769671048933
1977	0.65668470946698
1978	0.5664197655502506
1979	0.4003690743968414
1980	0.315613850908434
1981	0.5052733403591919
1982	0.7741047996806977
1983	0.7335321588157355
1984	1.546696864961163
1985	1.5110852260175505
1986	1.36527785250499
1987	1.725662055748129
1992	2.2740150245101893
1993	2.8531173525290434
1994	2.1799013111947327
1995	3.0337162559290776
1996	5.1129728568536095
1997	1.9479608599305154
1998	1.83503589907042
1999	2.1307140899241417
2000	1.4453941328605169
2001	1.8596024992285214
2002	2.473116916128743
2003	1.3419455790971828
2004	1.2233919080643836
2005	0.9545750750257623
2006	1.0510265982900788
2007	0.941062014933932
2008	1.0406463642274886
2009	0.8679176289826565
2010	0.8071188100073406
2011	0.8965567306505495
2012	0.8985464049834265
2013	0.8668512958816319
2014	2.033760412353863
2015	3.141128074289624
2016	3.2992452695913075
2017	2.6713014704460387