Year	% of commercial service exports
1977	35.391701136410504
1978	32.14377211138486
1979	25.165519580917746
1980	25.70629287221758
1981	25.2679995801093
1982	22.479797233388275
1983	21.471850806092725
1984	22.255618164814354
1985	23.80285069066005
1986	24.188699810757598
1987	24.445799050819286
1988	24.923109582650596
1989	23.48307594962308
1990	23.982307607593476
1991	25.11194007372027
2005	43.31910481159154
2006	40.7060161351971
2007	48.30246684669218
2008	47.25364623277531
2009	50.92142239910839
2010	48.861837691274566
2019	39.77686313617625
2020	23.078539640414398