Year	% of commercial service imports
1977	5.674265311727547
1978	5.271683411933566
1979	6.628778718258767
1980	3.4208955223880593
1981	5.736756195281199
1982	5
1983	5.317471692704601
1984	4.724855000707313
1985	5.285443722943723
1986	4.345085680519992
1987	5.264822134387352
1988	4.992922143579373
1989	4.168738604342781
1990	4.388437989463193
1991	4.836551811182633
1992	5.599561162918267
2003	1.9446081319976427
2004	3.090294543698696
2005	3.2102022867194373
2006	15.182601559294215
2007	9.339375557220546
2008	7.913054085696823
2009	5.093938217507934
2010	3.92573330394251