Year	% of GDP
1962	8.081981734481161
1963	9.46379895331705
1964	8.972613351836655
1965	8.542359349451184
1966	9.00394252517182
1967	8.20445635751446
1968	8.425980273410907
1969	8.155307203647155
1970	8.232190414293864
1971	7.8668589132142595
1972	8.009375614949883
1973	8.571695452469836
1974	8.404242474288933
1975	8.594029558403333
1976	8.425957974576018
1977	8.590992609921228
1978	9.585728411064032
1979	10.18724050203951
1980	9.943765908974335
1981	9.197781677462517
1982	9.208494992221413
1983	9.173802914647064
1984	8.929102587828426
1985	8.182219830350592
1986	8.730743459917855
1987	8.771396447510998
1988	7.208286095308101
1989	6.84131514140621
1990	6.424961147274851
1991	6.078263860107691
1992	6.462296577452761
1993	6.4211952969468085
1994	5.5693663828001485
1995	6.107906085545545
1996	7.465930374149732
1997	7.828576458329462
1998	8.496755963851893
1999	8.51334787181994
2000	6.828119873588368
2001	7.2543617675324565
2002	7.099025633957218
2003	7.955012242382734
2004	8.496270356848491
2005	9.509277497555331
2006	10.461582680597274
2007	10.494985227050975
2008	11.411936606513015
2009	12.48806727764442
2010	12.76736743571381
2011	11.532993112709036
2012	10.179309011992238
2013	10.7048231029058
2014	12.06227408797435