Year	% of total exports
1995	8.197692743855036
1996	8.318934422993614
1997	8.246409455278604
1998	8.101724462173957
1999	8.18008036733262
2000	7.627840947239065
2001	7.34167153236635
2002	7.08657861919958
2003	6.905650564807461
2004	6.578474845031405
2005	6.861352662123173
2006	6.380035008803548
2007	6.112116832937636
2012	5.008959356775399
2013	5.141948407445548
2014	5.181145555029133
2015	5.612031143670336
2016	5.642041046182972
2017	5.656765608399414
2018	5.611709608087339
2019	5.698841239081172