% of GDP
4.7
4.8
4.9
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6
6.1
6.2
6.3
6.4
6.5
6.6
6.7
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
% of GDP
% of GDP
