Year	% of merchandise exports
1972	27.885050906069157
1973	30.415886721076998
1974	41.46753567140492
1975	44.98304129234942
1976	45.33250630994592
2000	69.62274551402369
2001	67.33698128677098
2002	65.89597164011943
2006	72.10520654400943
2007	74.34642299013717
2008	68.38954290583368
2009	73.10383663131304
2010	71.7609433910585
2011	73.52138415693243
2012	72.82818088429444
2013	71.54811141311141
2014	73.56142894436879
2015	66.95705316695013
2016	66.80758584421403
2017	57.8162872676774
2018	59.794092243160456