Year	% of GDP
2004	20.940981773863033
2005	20.53714667874513
2006	20.660978370489012
2007	20.480248678655776
2008	20.538261381734767
2009	20.5965697151267
2010	20.302654910405927
2011	20.357878104244303
2012	20.365310862735534
2013	20.20355310314349
2014	20.564274057312996
2015	21.55966834045496
2016	21.163608833641163
2017	21.073707515996087
2018	21.393351962921738
2019	20.748563079653913
2020	21.11853903057944
2021	22.078786456697962
2022	21.439035997107975
2023	20.636428243892734