Year	% of total merchandise exports
2000	32.15230269543175
2001	36.67465186759862
2002	39.74987263742941
2003	56.682083336436385
2004	35.64016150519213
2005	36.29690645407734
2006	30.94858561771263
2007	35.44032946429323
2008	40.46563067217446
2009	49.40592502364636
2010	42.22521929737744
2011	40.79764655288796
2012	39.47122633444448
2013	53.58559066945563
2014	42.539052385557355
2015	51.882389757949724
2016	40.02408936760901
2017	42.779482085286105
2018	30.741275103086153
2019	33.94515953744553
2020	31.021568815233703