Year	% of GDP
1972	0.14612940746267486
1973	0.076438962374255
1974	-0.38591369806191733
1975	2.960099793736285
1976	1.1072478619065669
1977	1.7738936580246052
1978	2.444494820539287
1979	1.5466563613147286
1980	1.0595876532870023
1981	2.505020274026687
1982	4.8076974798969605
1983	2.8098847010916783
1984	3.4606830356002436
1985	3.305759161358618
1986	2.535838849646831
1987	2.286887532507877
1988	1.3793841948119951
1989	2.321591699449345
1990	2.2095822044934534
1991	1.1827766438743708
1992	4.432006216509046
1993	6.144043014290105
1994	4.221246456716053