Year % of GDP 1998 13.74373215445233 1999 13.476921281861799 2000 11.219754185325012 2003 11.25882686384817 2008 13.031511014491565 2009 12.675227384194582 2010 12.142165202367407 2011 14.575881186967205 2012 13.226990714276088 2013 14.022114346450673 2014 15.69974837200144 2015 15.797262655066058 2016 14.3852129298513 2017 14.850818408179089 2018 14.609842448027177 2019 14.900524623260017 2020 14.045238555397116 2021 14.446323096520727 2022 15.277879925441646