Year	% of GNI
1966	10.474613943692509
1967	6.448682570951865
1968	7.336183276302879
1969	6.27116896416923
1970	6.373746147242325
1971	9.234616626802056
1972	10.844321912774696
1973	13.763766884966195
1974	9.734807124651105
1975	7.923814067399981
1976	5.823526774300489
1977	9.319260018179541
1978	13.594487572049488
1979	14.194646918067178
1980	16.74215954040374
1981	15.440626453839437
1982	17.539246795403134
1983	22.079049725201592
1984	16.39436461055795
1985	17.005901026689195
1986	17.19689475052691
1987	18.99276359774791
1988	12.596636976708119
1989	12.887382949468766
1990	11.955608867987543
1991	11.707071196296484
1992	12.243307156002176
1993	13.986389611244043
1994	13.44081934765439
1995	12.435369708161396
1996	10.982630474244868
1997	10.294940504987975
1998	10.71397067329606
1999	10.291584366710934