Year	% of GDP
2002	18.098258600823044
2003	16.905495491105953
2004	15.925098381435824
2005	16.935093888579388
2006	17.22250105982906
2007	17.63826307701941
2008	17.67091531762546
2009	16.939109189864865
2010	15.59202295278365
2011	16.153035564082884
2012	18.01625740592474
2013	17.06623963607595
2014	18.345583125396825
2015	17.890222881489827
2016	16.689519362292287
2017	16.468847002984422
2018	17.956816764572523
2019	16.912734333579436
2020	16.13626114326542
2021	17.295973161231835