Year % of total merchandise exports 2012 1.8412928022106818 2013 0.23216989683645656 2014 0.02449033306390548 2015 0.04918661430688127 2016 0.4949348588831456 2017 4.862389930032204 2018 4.415909917845831 2019 2.7716288848970914 2020 0.30616047659910944