Year	% of GDP
2004	30.73986810830028
2005	30.630341121626575
2006	30.92470247437807
2007	30.848051965380552
2008	30.689386579318086
2009	30.14643010750219
2010	29.662640967392612
2011	30.00790868684828
2012	29.624956818408428
2013	28.991103130655706
2014	28.85929264032608
2015	27.72885676692278
2016	26.921362269138292
2017	26.971467146166468
2018	26.783350313212605
2019	25.81418963353285
2020	25.47211625614211
2021	26.65141789427722
2022	26.115023687081536
2023	25.251010327113505