Year Percent of GDP 1997-01-01 14.38950227346520 1998-01-01 1.35106165088472 1999-01-01 2.55261245868282 2011-01-01 1.15321473111777 2012-01-01 -4.05898250755030 2013-01-01 2.37777330314077 2014-01-01 1.11979974798652