Year	Percent of GDP
1998-01-01	34.9950834634448
1999-01-01	37.2609556846879
2000-01-01	36.1449277948393
2001-01-01	36.0124691774170
2002-01-01	37.6779975541077
2003-01-01	38.7565060237216
2004-01-01	38.0054747468989
2005-01-01	37.7479468653148
2006-01-01	37.8712666276935
2007-01-01	36.6359522045685
2008-01-01	38.3111417215967
2009-01-01	44.0737932321180
2010-01-01	47.4461558522444
2011-01-01	49.8619253725556
2012-01-01	52.4291904765060
2013-01-01	54.0589301806485
2014-01-01	53.7333645874957
2015-01-01	53.0756214366614