Year	% of GDP
1972	0.29704481554216927
1973	0.2646415993892455
1974	0.3044784154839806
1975	0.19468884453099833
1976	0.1933818751441199
1977	0.15871947990800825
1978	0.195212659421758
1979	0.17419891620444145
1980	0.14705153468264737
1981	0.14015433041933129
1982	0.1374305357678061
1983	0.14254309566085435
1984	0.20529797315260082
1990	1.1254603909324645
1991	1.1082460946016344
1992	1.0841893185103508
1993	0.9868419851932405
1994	0.99668240849017
1995	1.0195742447035736
1996	0.9243256663283619
1997	0.8527422927314396
1998	0.82692850679808
1999	0.796338257277757
2000	0.610364675546385
2001	0.6693321539837452
2002	0.7257388554493275
2003	0.7037593102195584
2004	0.7285129746292838
2005	0.7013625615185104
2006	0.6769608195022901
2007	0.6460680182562061
2008	0.954807566605458
2009	0.9487906918466117
2010	0.9030225785128583
2011	0.9660905867285006
2012	0.8149882327990287
2013	0.9302449382016745
2014	0.909187321359912
2015	0.9041896275745462
2016	0.9180228583272856