Year	% of GDP
1976	2.9056705024675233
1977	3.3286029826391466
1978	3.8586026909177242
1979	2.8651806619222215
1980	2.9175327300917075
1981	4.295778779145197
1984	4.655049623298186
1985	5.084718798885557
1986	3.774190099985771
1987	3.492181426680132
1988	3.2540299251909977
1990	3.1296343767356753