Year % of GDP per capita 1999 17.46328 2000 15.66871 2001 15.14994 2002 16.49449 2004 16.90553 2006 14.54023 2007 14.90954 2008 16.22261 2009 21.20577 2010 24.44369 2011 23.20475 2012 24.78822 2013 24.75781 2014 25.14192 2015 26.71543 2016 24.86943 2017 22.2852 2018 20.82721