Year	% of total exports
1995	35.32808862960016
1996	36.654729302717506
1997	37.950105907272295
1998	40.782552160293164
1999	42.731847591660674
2000	43.94593841437926
2001	44.578385152473594
2002	46.005413862468025
2003	46.007612116946184
2004	44.45005172222944
2005	44.642041032182924
2006	43.78654652283798
2007	42.25573337475696
2008	40.11471444456237
2009	51.25943334873042
2010	52.317792711588396
2011	48.06005232221947