Year	% of GDP
2000	4.71
2001	4.56
2002	4.73
2003	4.95
2004	4.72
2005	4.38
2006	4.22
2007	4.04
2008	4.23
2009	4.09
2010	4.07
2011	4.06
2012	4.13
2013	4.41
2014	4.02
2015	4.12
2016	4.06
2017	3.76
2018	3.76
2019	4.26
2020	4.67
2021	4.64