Year % of GDP per capita 2002 10.14512 2004 11.44409 2005 13.00607 2007 17.62629 2008 19.06857 2009 20.00857 2010 20.97786 2011 21.8504 2012 19.66737 2013 20.57305 2014 20.56801 2015 21.52655