Year	% of GDP
1990	86.70000119705145
1998	99.04613060348944
1999	97.16232618993583
2000	91.86516449505862
2001	97.84737696041881
2002	95.52294143865383
2003	91.23468551402114
2004	87.99128561942034
2005	89.12919385212548
2006	86.36115951830735
2007	79.83203722519467
2008	89.50610358758107
2009	91.23543906058022
2010	85.32565045265645
2011	84.99783080260303
2012	87.31923232116065
2013	88.08206081762606
2014	86.18223880831376
2015	89.18593095288256
2016	90.2627986493268
2017	89.12084929773818