Year	% of GDP
2000	3.037906994908006
2001	3.052040348551015
2002	2.926146535305559
2003	3.0129829961932137
2004	3.084109906764385
2005	3.0820694147058982
2006	3.1704135377950586
2007	3.2960012634617115
2008	3.4021645266371188
2009	3.7844767514877407
2010	3.6967819191771087
2011	3.682546788203887
2012	3.6800632167734317
2013	3.845725512013714
2014	3.9065420749898334
2015	4.186408383057301
2016	4.145382959678743
2017	4.152997727564703
2018	3.9840597916911897
2019	3.9665014628837945
2020	4.630148752031298
2021	4.342397840656972