Year	% of GDP
2004	6.21197995714737
2008	8.284350889580805
2009	7.908503383668836
2010	8.407892196611396
2011	7.54040362417486
2012	8.172377280519616
2014	4.09850069590061
2015	5.448991385129744
2016	6.807588937010641
2017	7.081244249197581
2018	8.639830719709153
2019	8.318458044759911
2020	8.709644826913465
2021	8.206292297099948