Year	% of total merchandise exports
2006	29.928867507009553
2007	38.706371367546765
2008	39.14718142944598
2009	37.97140824616927
2010	37.011408164930174
2011	36.69941553933439
2012	35.73396541107335
2013	31.81491779945653
2014	31.487698608490483
2015	29.710717858944495
2016	28.229466728180007
2017	28.772479862110924
2018	25.79812451264426
2019	24.55228358091025
2020	26.862068573735392