Quarter	Percentage of GDP
2008-01-01	22.9
2008-04-01	22.5
2008-07-01	20.7
2008-10-01	19.5
2009-01-01	20.0
2009-04-01	22.9
2009-07-01	25.3
2009-10-01	25.6
2010-01-01	25.7
2010-04-01	25.0
2010-07-01	26.4
2010-10-01	26.6
2011-01-01	26.8
2011-04-01	26.9
2011-07-01	25.1
2011-10-01	25.3
2012-01-01	26.1
2012-04-01	26.0
2012-07-01	27.4
2012-10-01	28.1
2013-01-01	28.5
2013-04-01	28.6
2013-07-01	29.3
2013-10-01	29.8
2014-01-01	30.0
2014-04-01	31.0
2014-07-01	30.4
2014-10-01	30.0
2015-01-01	30.3
2015-04-01	31.6
2015-07-01	31.4
2015-10-01	32.4
2016-01-01	34.4
2016-04-01	35.4
2016-07-01	36.6
2016-10-01	35.8
2017-01-01	37.2
2017-04-01	38.0
2017-07-01	39.0
2017-10-01	39.8
2018-01-01	40.6