Year	% of GDP
1977	18.45099427808814
1978	19.753137107894965
1979	21.168215925880716
1980	24.610452909521275
1981	20.69809347385055
1982	19.771034641732783
1983	21.153359290554366
1984	18.9960535491326
1985	17.903460357141228
1986	17.611868890807138
1987	18.506020333119817
1988	16.867773694495376
1989	17.019871224928178
1990	16.49360747749228
1991	13.587360747510472
1992	14.011446993988322
1993	14.166963518505613
1994	17.267063932701422