Year	% of GDP
2005	18.823283563147086
2006	19.380725626786866
2007	19.380414495387676
2008	18.57965764609569
2009	18.301035459213143
2010	17.130570570836724
2011	18.694145538196025
2012	20.274092482882697
2013	20.687453691542547
2014	20.371229229790966
2015	20.960091682192203
2016	21.488253200203356
2017	22.627123974930633
2018	23.36716792330652
2019	23.78671650151446
2020	23.9472430412931
2021	24.459372702055248
2022	24.579573458949156
2023	23.88276779525439