Year	% of GDP
1972	8.265513269425174
1973	7.547810910700835
1974	5.41779096390626
1975	8.194078453392851
1976	7.562058504147773
1977	8.216323008293386
1978	8.87085856943357
1979	5.993374742209537
1980	5.170284876198358
1981	6.979035599977769
1982	5.922931726855361
1983	6.033980969502477
1984	6.437096595622337
1985	7.3298096379007545
1986	6.784250890615318
1987	6.005338424770292
1988	5.434552423103534
1989	5.3697504436685035
1990	5.572236545501886
1991	6.161890811950306
1992	6.881180646026077
1993	3.8602459915630565
1994	4.371236116207843
1995	6.220798678391472
1996	7.946315139840843
1997	10.157962098625523
1998	8.644376053917933
1999	8.327823336582073
2000	5.86128209638759
2001	5.746903558492081
2002	4.994377711648261
2003	5.201325349605256
2004	5.195323351888044
2005	6.657593715338117
2006	6.217681409467263
2007	5.937687689499752
2008	6.197809288081939
2009	7.358478041486825