Year	% of commercial service exports
1978	17.8412961836882
1979	37.7496090125428
1980	40.6653701057632
1981	42.238193382311
2011	20.8312434667236
2012	21.2685771876184
2013	23.7338894888414
2014	24.4379667944258
2015	22.7229447411806
2016	24.1109270946214