Year	% of total exports
1995	23.049061573921634
1996	25.207830517565032
1997	34.212115113704975
1998	43.75410194705754
1999	55.96919127086007
2000	71.77637511271415
2001	68.5202066241264
2002	73.74321772235378
2003	63.41740742720449
2004	60.48882102219761
2005	60.242107956430424
2006	56.537114250918805
2007	60.014749230871544
2008	56.35852030507809
2009	65.75784537703318
2010	53.484602358154845
2011	48.53889723108841
2012	45.646657623375454
2013	45.132298324989684
2014	49.54149642790627
2015	51.964443123202386
2016	52.93792042737613
2017	49.47156282311463
2018	48.19516798294703
2019	50.97062306495226
2020	35.916417796217395