Quarter	Percentage of GDP
1999-01-01	110.2
1999-04-01	110.2
1999-07-01	110.8
1999-10-01	111.5
2000-01-01	111.0
2000-04-01	110.7
2000-07-01	110.9
2000-10-01	111.7
2001-01-01	111.0
2001-04-01	111.5
2001-07-01	112.3
2001-10-01	113.1
2002-01-01	114.3
2002-04-01	115.2
2002-07-01	115.9
2002-10-01	116.5
2003-01-01	116.1
2003-04-01	117.1
2003-07-01	117.3
2003-10-01	117.3
2004-01-01	117.3
2004-04-01	117.2
2004-07-01	117.0
2004-10-01	117.5
2005-01-01	117.6
2005-04-01	118.0
2005-07-01	118.4
2005-10-01	118.9
2006-01-01	120.1
2006-04-01	120.9
2006-07-01	121.1
2006-10-01	121.8
2007-01-01	121.8
2007-04-01	123.0
2007-07-01	124.1
2007-10-01	124.9
2008-01-01	124.2
2008-04-01	124.5
2008-07-01	125.5
2008-10-01	127.1
2009-01-01	129.8
2009-04-01	131.9
2009-07-01	133.6
2009-10-01	133.6
2010-01-01	131.5
2010-04-01	131.4
2010-07-01	131.0
2010-10-01	130.8
2011-01-01	128.6
2011-04-01	128.6
2011-07-01	128.6
2011-10-01	129.5
2012-01-01	129.5
2012-04-01	130.2
2012-07-01	130.9
2012-10-01	131.7
2013-01-01	132.6
2013-04-01	133.7
2013-07-01	134.5
2013-10-01	134.5
2014-01-01	135.2
2014-04-01	135.8
2014-07-01	136.1
2014-10-01	137.3
2015-01-01	138.6
2015-04-01	139.1
2015-07-01	140.3
2015-10-01	141.8
2016-01-01	143.0
2016-04-01	143.8
2016-07-01	144.3
2016-10-01	144.4
2017-01-01	144.3
2017-04-01	144.1
2017-07-01	144.2
2017-10-01	143.9
2018-01-01	144.8