Year	% of total merchandise exports
1997	90.58187555775655
1998	91.40358099498569
1999	91.77791451373947
2000	91.07209458566182
2001	91.35703749678233
2002	91.0274248749838
2003	90.9565369670156
2004	90.77295743988057
2005	90.44967642583845
2006	89.93989831496518
2007	89.42447843421058
2008	88.65172423154114
2009	88.33170053294246
2010	86.48312742354823
2011	85.21135736168853
2012	84.39340708658948
2013	83.91440211575066
2014	84.2445184840065
2015	85.70031237573738
2016	86.03418239813732
2017	85.18330352314119
2018	85.63561395113625
2019	86.56447533471756
2020	86.80703343050118