Year	% of GDP
2001	112.778942642933
2002	113.032779680441
2003	115.536932289994
2004	117.016159719273
2005	121.202760579005
2006	127.325658568346
2007	136.026092361028
2008	144.021254564938
2009	151.305520543936
2010	159.938573750931
2011	159.456541345861
2012	158.180497728402
2013	147.745067872833
2014	139.85743994621
2015	138.209658419424
2016	140.110728936303
2017	133.661282353268
2018	130.863248113189