Year % of GDP 2000 12.611739483322795 2001 8.880810057112614 2002 6.492283394586996 2003 3.679119003045596 2004 12.901952962684643 2005 7.843475247489337 2006 10.84463733666502 2007 13.280575843219935 2008 11.450203606896975 2009 9.479685023144663 2010 8.649027412639803 2011 7.990085289407037 2012 6.644585461907175 2013 8.657921382607196 2014 9.552766931321516 2015 11.747864262928255 2016 13.482575336056385 2017 15.597900002626636 2018 18.2239260900454 2019 20.142395419779834 2020 17.857490349675352 2021 22.040799337814253 2022 23.27825982982498 2023 18.152468387603363