Year % of GDP per capita 1998 16.4901 2006 15.60472 2007 15.13138 2008 15.10081 2009 17.1887 2010 17.66182 2011 17.05452 2012 17.32327 2013 17.55396 2014 17.6705 2015 17.50845 2016 17.44257