Year	% of GDP
1961	1.3266239707227814
1962	1.6723842195540308
1963	2.3944805194805197
1964	2.8980190755685986
1965	1.7246989912137978
1966	-0.9166427957605271
1967	-0.45638933661527975
1968	0.2539242257792646
1969	2.052012211301183
1970	6.28035977092995
1971	6.5183101383554725
1972	11.407047025678576
1973	24.991800590357492
1974	23.447109459062897
1975	12.776232751133843
1976	17.587169830399617
1977	20.616095494801694
1978	18.524150916069228
1979	22.699992484381205
1980	14.3785492652655
1981	7.292416131334761
1982	9.324262520009146
1983	12.182030338389731
1984	13.292936596201047
1985	9.504558000719525
1986	11.962053415231505
1987	13.999926917280137
1988	18.535689725876157
1989	11.127159602061923
1990	16.123792341200183
1991	17.514422010206346
1992	25.451101112952877
1993	33.33196359228288
1994	35.13311393595284
1995	39.27717726443573
1996	33.751181067596804
1997	20.164650545228543
1998	23.128757240248092
1999	26.598262386443444
2000	38.82689763553072
2001	36.03145445975972
2002	24.10449401570074
2003	35.30833282414338
2004	33.246494689488706