Year	Percent of GDP
1990-01-01	7.54985906289088
1991-01-01	10.39739246776170
1992-01-01	10.15013133655900
1993-01-01	9.35197019289285
1994-01-01	8.32281121211012
1995-01-01	7.35253146746848
1996-01-01	7.00148480444810
1997-01-01	8.87060568446589
2012-01-01	33.88317033849410
2013-01-01	36.67394361477540
2014-01-01	38.38780171213720
2015-01-01	39.74371067677630
2016-01-01	40.36072332680950