Year	% of GDP
2000	3.023685762176047
2001	3.0460352974485088
2002	2.9302177818443824
2003	3.0131715970679482
2004	3.0742697975251905
2005	3.0567307317432135
2006	3.133574597874152
2007	3.26239031634844
2008	3.3827107858479963
2009	3.7707449720013777
2010	3.6808362141448066
2011	3.666535038526954
2012	3.6715922008184916
2013	3.840579742461819
2014	3.907956028025283
2015	4.182434986029534
2016	4.165955986693122
2017	4.195596740165897
2018	4.049074621189214
2019	4.037866055655477
2020	4.7091394099957
2021	4.43300456275047