Year	% of merchandise exports
1962	44.03708151220136
1965	4.554777998274196
1970	3.2396865100498813
1972	3.4119893200706257
1973	4.443133998256746
1974	2.7635411316758627
1975	3.368914062205726
1976	5.128650766747782
1977	4.450087692862418
1978	7.846036630081891
2015	0.611837619359577
2016	0.7658801453045222
2017	0.525036799776305
2018	0.3736903423618251
2019	0.57109662471632
2020	0.6134408727174278
2021	0.43863773158071984
2022	0.45696955846511994