Year	% of GDP
1972	0.9947982484497605
1973	1.0293406621370589
1974	1.099985257929533
1975	1.1338470267401213
1976	1.0853611432985708
1977	0.8911521323997454
1978	0.7541547016207761
1979	0.7371208868606273
1980	0.7420906058075583
1981	0.669305238121783
1982	0.784223272978895
1983	0.8795638403596274
1984	0.7531431404310758
1985	0.9746859680368052
1986	0.829370891835705
1987	0.8755057954009628
1988	0.839797447969496
1989	1.0077456435168186
1990	1.2206154890664362
1991	1.2779991542766134
1992	1.198357558355773
1993	1.0731432996012626
1994	0.9647126393593095
1995	1.5478167976568509
1996	1.2745152984693289
1997	1.1597379917243984
1998	1.1867789816935588
1999	1.1630983236967625
2000	0.6159425556346934
2001	1.0750042534256437
2002	1.060985917029743
2003	1.1139331846711604
2004	1.4625328037851655
2005	2.07192283962312
2006	1.5636145262554364
2007	1.4694067279237775
2008	1.8533509036144578
2009	2.028341905550225
2010	1.9450400453078016
2011	1.738372058054
2012	1.6307845820337687
2013	1.597710963695736
2014	1.7403896024405723
2015	1.6689704041480842
2016	1.5943102309899606