Year	% of GDP
1997	59.020622645044554
1998	77.24713488788016
1999	69.54234738724008
2000	81.71280569281025
2001	68.86157624227961
2002	46.60913523933983
2003	51.660886354802635
2004	58.69433996532742
2005	53.84546957424624
2006	70.32003446088082
2007	53.28259920913047
2008	17.967095409983646
2009	25.922141898149174
2010	27.20352454350471
2011	45.320433387659214
2012	48.41408163123387
2013	71.44635312399772
2014	55.24676116197956
2015	43.78403314580287
2016	40.1356114815031
2017	43.45669044593918
2018	28.48623276220758