Year	% of GDP
2004	21.1624176636549
2005	20.817544432313635
2006	21.030685126157312
2007	20.924345436920103
2008	21.063448917108065
2009	21.085687171187256
2010	20.75667434429808
2011	20.979888922232377
2012	21.041052625061983
2013	20.909775974597505
2014	21.11572288781249
2015	21.252540741186973
2016	20.891817579621893
2017	20.895758311007025
2018	21.216823044752378
2019	20.614635865129653
2020	20.945558405182233
2021	22.041198006046304
2022	21.472355613840673
2023	20.72613183684696