Year	% of commercial service exports
1978	40.7662114317308
1979	35.494624758205
1980	33.4434373182698
1981	32.818876013086
2011	32.4744274110507
2012	31.4491575462658
2013	29.0031813584941
2014	27.193646096174
2015	23.8931270939505
2016	27.6454981109378