Year % of GDP 2005 12.180239831580812 2006 12.75297276093167 2007 18.075846959213532 2008 15.576942898045152 2009 15.391893276817084 2010 16.502371984173454 2011 16.668677885778905 2012 16.756189071495 2013 16.602758241957666 2014 19.3397287795383 2015 19.48570319632264 2016 19.182724245843342 2017 19.06150069118851 2018 19.574571703709914 2019 19.40426621350619 2020 17.407741777326496 2021 18.177341304160624 2022 18.530530889790384