Year	% of GDP
2000	3.6760076030981494
2001	4.1051329485623045
2002	4.372877628779515
2003	4.720842924819898
2004	4.833363714242708
2005	4.8067883626924255
2006	5.0456067407802605
2007	5.221531195443215
2008	4.972097979590137
2009	5.398895604486218
2010	5.093814102970613
2011	4.806069948715726
2012	4.930430387973755
2013	5.4619467630793554
2014	5.424034836767367
2015	5.324940577952024
2016	5.488469941656115
2017	5.327807780282594
2018	4.993664178564932
2019	4.937728940648806
2020	5.276519605664323
2021	5.2528792991876925