Year	% of GDP
1972	0.8096453020335908
1973	0.7067061333051137
1974	0.7188870039128546
1975	0.7728849222348908
1976	0.7311902289682489
1977	0.7430400217154897
1978	0.7268720578349451
1979	0.6708935858274728
1980	0.6851670182940875
1981	0.7212362735116674
1982	0.7445109021851857
1983	0.7446714201959931
1984	0.7111293108266217
1985	0.6853368369480725
1986	0.6644673749610549
1987	0.7211377888231614
1988	0.6470752058695574
1989	0.6412717249613759
1990	0.6757654694208668
1991	0.7169141313670964
1992	0.7211810433691382
1993	0.6744272985189897
1994	0.7005451092194225
1995	0.9214043483333847
1996	0.9307224005812338
1997	0.8353636539488141
1998	0.9101357665765863
1999	0.9666456807613131
2000	0.6477001502567563
2001	1.333622268961045
2002	1.3996885435768505
2003	1.4750922040501586
2004	1.4132621874908413
2005	1.427311961314136
2006	1.3733224048050539
2007	1.4889974731231952
2008	1.6977755794605647
2009	1.6234690857741414
2010	1.7183960165217103
2011	1.7078214024307596
2012	1.537377306153654
2013	1.479675221526104
2014	1.4734104284488678
2015	1.3950344280907843
2016	1.3206371267342967