Year	% of merchandise exports
1978	5.420803754264361
1979	6.898300098757915
1991	12.65465055388283
1992	14.674832509072033
1993	19.570891882892454
1999	11.155754354248867
2000	9.130787734149942
2001	10.31935316340227
2002	10.453962871073989
2003	9.955091388616173
2004	9.44174728618572
2005	11.801710581929369
2006	8.749654298360701
2007	9.010252024000199
2008	8.938359415774194
2009	10.648379754663402
2010	10.379075481192407
2011	9.886667688249368
2012	11.39207814211898
2013	11.133373768626672
2014	11.995940965987122
2015	15.942287431922683
2016	16.400860795776072
2017	16.442588549256445
2018	17.963128882541945
2019	15.859800394084411
2020	18.606847110905175
2021	18.29195744798734