Year	% of total exports
1995	12.901672431689628
1996	13.210592181212883
1997	14.282751521233667
1998	16.508795987388314
1999	15.988824735198236
2000	13.253034152855156
2001	20.081109233284376
2002	20.409097617405383
2003	24.445803161011348
2004	22.882783974607992
2005	13.334763925911044
2006	12.283017905221405
2007	12.28440656278744
2008	10.528468155757393
2009	15.032757677021438
2010	14.680702641180558
2011	11.455118261476134
2012	11.869934397160062
2013	10.835597808454512
2014	11.83205991087757
2015	14.39835412712753
2016	14.302662015318253
2017	15.18908672690884
2018	14.650221846112233
2019	16.878599453716152