Year % of GDP per capita 1998 11.01968 2002 11.96072 2004 12.15758 2007 19.05637 2008 19.68954 2009 19.00066 2010 23.18217 2011 19.93646 2012 26.36405 2013 28.51388 2014 27.11666 2015 22.83451