Year	% of GDP
2004	18.19838267908505
2005	19.304858739641503
2006	19.763311146439914
2007	21.384978178340507
2008	22.860293561024527
2009	22.253249648850236
2010	22.647951352588098
2011	22.726426443165302
2012	22.597804052938027
2013	24.116816745331093
2014	24.514556708519773
2015	23.092492671671682
2016	22.834728889317343
2017	22.525465105211467
2018	22.45363437217386
2019	23.941240997760495
2020	24.144732312704186
2021	23.38782887107768
2022	23.456455935925174