Year	% of GDP
1972	1.2028877577572092
1973	1.0795536263240324
1974	1.086974649453994
1975	1.233333258142328
1976	1.0486272730716533
1977	0.9994883697703345
1978	0.795771209836837
1979	0.7800676158913232
1980	0.8613202924319306
1981	0.9139657851788363
1982	0.9031178966634582
1983	0.9165131174014169
1984	0.8081539637555486
1985	0.8306818313065015
1986	0.8302700657402157
1987	0.7705834021487623
1988	0.7523763106602145
1989	0.7976839941668383
1990	0.9144587388634908
1991	1.077140588651541
1992	1.0084437354042033
1993	0.9519927094001431
1994	0.895497282018766
1995	1.4572563178935403
1996	1.3950153400161942
1997	1.3207395925105143
1998	1.3397183343301622
1999	1.3946810477366234
2000	0.37336536851341495
2001	1.260863325122678
2002	1.251631226467605
2003	1.3968629324669783
2004	1.3564931439972088
2005	1.319730287809609
2006	1.2655510215822563
2007	1.2816745949333765
2008	1.3100822839868655
2009	1.4744455145141386
2010	1.3566407134922664
2011	1.300125225893597
2012	1.2024288559509757
2013	1.1380816972892323
2014	1.1228218130122252
2015	1.1101765907308216
2016	1.08609608679192