Year	% of GDP
1980	20.331298010459093
1981	20.778050739120495
1982	19.814846781357787
1983	17.475668198745826
1984	16.63362358638383
1985	15.46463345097075
1986	16.74120173014156
1987	19.837407349313782
1988	20.959482153148073
1989	23.728409955137757