Year	% of GDP
2000	5.183638797431189
2001	5.224373196784308
2002	5.121605323864703
2003	5.144264187832416
2004	5.0901432443572485
2005	5.07390657172101
2006	4.997385137137708
2007	4.919315461976779
2008	4.989880455158898
2009	5.345671750446058
2010	5.1418867488365985
2011	5.100465581050446
2012	5.163208253143012
2013	5.252629669724835
2014	5.295283879646321
2015	5.3915287010012545
2016	5.416002702805584
2017	5.433679019273054
2018	5.392282164297354
2019	5.466246823502932
2020	5.829879874129032
2021	5.72609214307998