Year	% of GDP
1972	2.345325267961371
1973	1.9581510202313392
1974	2.065924687977812
1975	2.284903876457611
1976	2.2692339937959365
1977	2.1590217170692103
1978	1.938675461271058
1979	1.8123587038432556
1980	1.731837959705329
1981	1.8877157782698588
1982	1.7292765555984393
1983	1.6859331411350893
1984	1.6308992308736732
1985	1.7687718834183728
1986	1.9317734372203461
1987	1.496820147545154
1988	1.4163155490126402
1989	1.1736269164946453
1990	1.3034799326642688
1991	1.2988160925697756
1992	1.0436127037299492
1993	0.9711130584858205
1994	0.5226634579565068
1995	0.7937057976929347
1996	0.6771122119186268
1997	0.69023800049683
1998	0.6767026223738796
1999	0.4792206854683627
2000	0.446560645419273
2001	0.5628074151050928
2002	0.49592877054029294
2003	0.5304374794715377
2004	0.4705785250412414
2005	0.5694606492453491
2006	0.5494281426914797
2007	0.5241514802717794
2008	0.600965490664359
2009	0.5362839682624126
2010	0.6063974537550773
2011	0.7083398157798013
2012	0.9031017320984019
2013	0.8327476443730445
2014	0.9275999393990311
2015	1.0171120142656724
2016	0.8181185567596675