Year % of GDP per capita 1997 16.59577 2000 21.67149 2001 26.3833 2002 27.00911 2003 25.10558 2004 20.26725 2006 13.8087 2007 13.77379 2008 11.99764 2009 21.34924 2010 18.05817 2011 19.1991 2012 20.8482 2013 20.06423 2016 21.14754 2017 22.59321 2018 22.81098