Year % of GDP 1998 11.682493344091556 1999 43.191155424540504 2000 25.41461410940929 2002 14.094159923346448 2003 19.632839529378682 2004 22.06374239250623 2005 30.031463135288856 2006 32.87191781024782 2007 42.86664453898869 2008 16.620265592672165 2009 33.82463983966366 2010 33.75283449297813 2011 20.153114026041234 2013 17.619833013858358 2014 18.617561918226126 2015 19.228361773758607 2016 18.955617838397767 2017 24.45485458959985 2018 17.313132103664103 2019 22.682159562417542 2020 28.042994497408376 2021 17.455243010008502 2022 29.124935102562425