Year	% of merchandise exports
1977	12.919449054881017
1978	12.443498507991944
2000	7.630170362034734
2001	8.082575648550419
2002	7.742862526943613
2003	6.790484682842065
2004	7.362891249897281
2005	8.570889052047994
2006	8.629259130230533
2007	9.615634961985766
2008	9.401260086485143
2009	6.648619490830162
2010	9.334894170802102
2011	9.024852548621487
2012	8.02778772781684
2013	9.083019741371498
2014	11.909010144243052
2015	10.790968899650938
2016	12.805075251823649
2017	12.034360318925057
2018	12.485328173220164
2019	12.625421029485416
2021	13.353256490095964