Year	% of GDP
2000	4.11
2001	4.06
2002	4.04
2003	3.65
2004	4.04
2005	3.88
2006	3.85
2007	3.82
2008	3.85
2009	4.06
2010	3.74
2011	3.58
2012	3.31
2013	3.69
2014	3.47
2015	3.68
2016	3.62
2017	3.33
2018	3.64
2019	3.9
2020	4.02
2021	4.07