Year	% of total exports
1995	14.775745399485075
1996	14.881729024968282
1997	13.905083715977733
1998	13.904615157591282
1999	15.24722781495056
2000	13.804131305860082
2001	13.892618861215086
2002	14.376725991438356
2003	15.922226491166741
2004	15.693397155423686
2005	14.34642354535115
2006	12.742176756357331
2007	13.417906599768006
2008	11.423755445953374
2009	13.468512953423822
2010	11.665893457068536
2011	10.384708076353387
2012	10.7510340819278
2013	10.51199374853608
2014	11.88709427294969
2015	14.883996078316391
2016	15.576852902233831
2017	14.831209374256419
2018	14.465669891850592
2019	14.01369433162297
2020	8.718681189251257