Year	% of central government expense
1972	0.06405277273035281
1973	0.031430183629756366
1974	0.015053699811100942
1977	0.014777417317198553
1978	0.024741609506624157
1979	0.02894791478421299
1980	0.18976330479452055
1981	0.15451526495589393
1982	0.08810227145902162
1983	0.06959839312929846
1984	0.06480886767305193
1985	0.058673315174829266
1986	0.07174470936213632
1987	0.04956283311820098
1988	0.07259887323548699
1989	0.0558677203208184
1990	0.14524234906364836
1991	0.05081324677099864
1992	0.03564468951735386
1993	0.015372617636903474
1994	0.03448285552433559
1995	0.03352190774541808