Year	% of GDP
2004	30.731129936405637
2005	30.621569249100638
2006	30.915497914042827
2007	30.838499469321377
2008	30.679656081165213
2009	30.13676223180103
2010	29.652948400655138
2011	29.998030187922797
2012	29.615264321766777
2013	28.981542026637523
2014	28.849778276558503
2015	27.719740708871527
2016	26.912555358702384
2017	26.962575316072872
2018	26.77447348117327
2019	25.80559401914017
2020	25.463595827282248
2021	26.642437283117182
2022	26.106204845273908
2023	25.242507521446544