Year	% of total exports
1995	5.62181194633968
1996	5.086513602356409
1997	5.078327342709082
1998	5.126790795149903
1999	5.300414817117591
2000	4.9739035052388365
2001	5.294922215675976
2002	5.832784023771247
2003	5.4786666072258035
2004	5.075679683835545
2005	4.221771763880857
2006	3.867967446053134
2007	3.6242381418308227
2008	3.2641554607738543
2009	3.697731631308198
2010	3.505695102652947
2011	3.436078461913065
2012	3.43302234557901
2013	3.444111241552008
2014	3.9492837423216915
2015	3.9848641130364744
2016	4.47972048953191
2017	4.639660214330788
2018	4.509159071605366