Year	% of merchandise exports
1962	13.831356505256895
1963	9.467291731936257
1964	12.87941589173239
1965	13.072192515369183
1966	12.456910065633734
1967	8.0255166051073
1968	7.243943214018134
1969	8.721606237055287
1970	10.914127520755098
1971	12.747720237074683
1972	14.8909300946459
1973	12.302643997411282
1974	10.570576270228965
1975	9.587881643286188
1976	11.51367228156794
1977	14.576069377959492
2008	34.68426096404875
2009	18.04329676889612
2010	19.626558786704106
2011	14.11811520436952
2012	16.964016151821472
2013	14.219335075292678
2014	14.721936811735045
2015	15.862603273450368
2016	6.561714611667563
2017	4.11962616825126
2018	3.41200576596583
2019	4.773740058867722