Year	% of GDP
1999	20.25688477299756
2000	20.83892501498
2001	20.983962068158778
2002	21.586895139585028
2003	20.575889626102832
2004	20.959365792319446
2005	19.905775290681497
2006	19.245473801956013
2007	18.616127376130237
2008	17.53933131720839
2009	15.765682311078866
2010	15.572888805914234
2011	17.245748640192488
2012	16.995105836314334
2013	17.38002413941778
2014	16.997415560183445
2015	17.05299919590052
2016	16.412656260579706
2017	15.805308750244837
2018	15.525623262765292
2019	14.89211538039413
2020	14.642244511460104
2021	15.089607780399328
2022	15.36290688172535