Year	% of GDP
1961	-12.03110704483074
1962	-11.706689536878214
1963	-13.555194805194807
1964	-15.994130594277328
1965	-19.947933615359585
1966	-23.345746204525923
1967	-22.261657641567535
1968	-21.214214862831287
1969	-26.980913035722487
1970	-35.461478927571314
1971	-36.86868272370035
1972	-17.040880089616547
1973	10.05794249480704
1974	7.042942384818546
1975	-6.185448229277236
1976	0.9928167022206493
1977	-1.293800539083558
1978	-3.4832210876964296
1979	-0.11024745128951052
1980	-10.139927404718692
1981	-20.503217939566976
1982	-23.662245597987653
1983	-17.255542590431737
1984	-13.702759135773679
1985	-10.325481196094172
1986	-7.775142868250204
1987	-6.505970168026141
1988	-8.671650736569825
1989	-12.099024854713203
1990	-8.32195565958
1991	-9.890170845351676
1992	2.1477622543215724
1993	15.697232438207557
1994	13.766549735095746
1995	17.337992154583755
1996	11.005663237523363
1997	-0.8929289790383637
1998	5.222047516530832
1999	10.229925692666681
2000	16.934880543971733
2001	13.079567730827312
2002	2.9125108317961477
2003	15.38686364083518
2004	13.245188189540816