Year	% of total merchandise exports
2011	5.533821709194902
2012	5.351828265738619
2013	67.49652782749315
2014	45.34942249025195
2015	25.218761545133294
2016	81.03542505011994
2017	51.07742630692329
2018	59.340332533527985
2019	62.72910866554682
2020	58.96694716820162