Year	% of GDP
2004	31.975069970263327
2005	32.093924328677694
2006	32.45232805659434
2007	32.38335311644068
2008	32.11941160334752
2009	31.596238091031037
2010	31.612821682006082
2011	32.06479118642368
2012	31.52857786597396
2013	30.671008072174434
2014	30.396444205515444
2015	28.951670578721856
2016	28.069442237712334
2017	28.10893687151002
2018	27.84101115441765
2019	26.77472412329007
2020	26.285165756144185
2021	27.54710274425987
2022	27.066531421304795
2023	26.18060546636395