Year	% of commercial service exports
1977	3.8940809968849237
1978	4.905200904505378
1979	16.65103189493381
1980	5.045045045045072
1981	5.419580419580072
1982	7.60069294066723
1983	5.477424130273249
1984	4.3282236248874995
1985	6.105705018126244
1986	12.125249833444258
1987	9.395424836601421
1988	15.125895975004553
1989	22.124634044332964
1990	14.294776908437214
1991	17.811759638165086
1992	14.285714285714008
1993	12.463708004976894