Year	% of GDP
2000	3.61
2001	3.99
2002	4.24
2003	4.08
2004	3.96
2005	3.98
2006	4
2007	4.09
2008	4.54
2009	4.73
2010	4.61
2011	4.47
2012	4.37
2013	4.56
2014	4.49
2015	4.44
2016	4.53
2017	4.53
2018	4.49
2019	4.61
2020	4.67
2021	4.64