Year	% of GDP
2001	12.987611817898573
2002	15.002317139219501
2003	15.741119708106426
2004	15.71887681804218
2005	16.825899462506865
2006	19.65470095101357
2007	21.678718240213048
2008	21.130276181282337
2009	24.528079119919525
2010	25.261427799990667
2011	26.772502490938876
2012	28.46313493010408
2013	31.705885549756402
2014	32.50040675844178
2015	35.23812263065374
2016	37.28661605194581
2017	38.215498613867744
2018	37.32449971443263
2019	39.19793493807317
2020	40.79915316519873
2021	38.86001201965763
2022	37.86385693456063
2023	36.6188425068002