Year	% of merchandise exports
1973	2.0373564368399806
1974	2.161373509065523
1975	3.380007107405886
1977	51.38865253486934
1978	76.60459738431578
1981	90.93508734130857
1999	74.45229317514064
2000	64.93783396600799
2005	78.90424331741714
2007	58.9427925002792
2009	45.55049685564783
2010	47.56955060874553
2011	36.91873432193093
2012	40.438169117060085
2013	26.99532384667825
2014	17.452548890188773
2015	28.47725857368732
2016	34.71219215886169
2017	38.49853683187243
2018	56.93934136503993
2019	22.030197089184018
2020	28.865860425993134
2021	22.822143478643493
2022	23.017766518270736
2023	20.460306922440203