Year % of GDP per capita 1998 17.90055 1999 18.86803 2000 19.39073 2001 19.51486 2002 21.3041 2003 19.25544 2004 19.35567 2006 33.63857 2007 20.95946 2008 26.80057 2009 29.45496 2010 26.70617 2011 24.71599 2012 33.09911 2013 36.91353 2014 27.32363 2015 26.76693 2016 24.50426