Year	% of GDP
2004	20.14704793024287
2005	19.792412450881333
2006	19.884200043919307
2007	19.738777617779196
2008	19.773821683246535
2009	19.832967486866945
2010	19.554357610861782
2011	19.66160774953632
2012	19.699775083662573
2013	19.559186513475616
2014	19.882120408526497
2015	20.776786281790166
2016	20.46637445222691
2017	20.42589178402624
2018	20.74837857636692
2019	20.193252841979806
2020	20.54171658259947
2021	21.52077507253252
2022	20.93241408429428
2023	20.176284866599776