Year	% of commercial service exports
1977	35.39170113641051
1978	32.14377211138486
1979	25.165519580917746
1980	25.70629287221758
1981	25.2679995801093
1982	22.479797233388275
1983	21.47185080609273
1984	22.255618164814354
1985	23.80285069066005
1986	24.188699810757594
1987	24.445799050819286
1988	24.923109582650596
1989	23.483075949623075
1990	23.982307607593473
1991	25.111940073720266
2005	43.113065847501645
2006	40.41802313537
2007	48.24093017184765
2008	47.32076333896786
2009	51.03213606692773
2010	49.200786792230744
2019	40.246206282767076
2020	23.63835625467615