Quarter	Percentage of GDP
1999-01-01	109.2
1999-04-01	109.2
1999-07-01	109.9
1999-10-01	110.9
2000-01-01	110.6
2000-04-01	110.3
2000-07-01	110.6
2000-10-01	111.5
2001-01-01	110.7
2001-04-01	111.2
2001-07-01	112.1
2001-10-01	113.0
2002-01-01	114.1
2002-04-01	115.1
2002-07-01	115.8
2002-10-01	116.4
2003-01-01	116.1
2003-04-01	117.0
2003-07-01	117.3
2003-10-01	117.5
2004-01-01	117.4
2004-04-01	117.3
2004-07-01	117.1
2004-10-01	117.8
2005-01-01	117.8
2005-04-01	118.2
2005-07-01	118.7
2005-10-01	119.2
2006-01-01	120.6
2006-04-01	121.5
2006-07-01	121.6
2006-10-01	122.3
2007-01-01	122.3
2007-04-01	123.5
2007-07-01	124.5
2007-10-01	125.3
2008-01-01	124.6
2008-04-01	124.8
2008-07-01	125.7
2008-10-01	127.0
2009-01-01	129.8
2009-04-01	132.0
2009-07-01	133.7
2009-10-01	133.7
2010-01-01	131.6
2010-04-01	131.4
2010-07-01	131.0
2010-10-01	130.7
2011-01-01	128.4
2011-04-01	128.2
2011-07-01	128.1
2011-10-01	129.0
2012-01-01	128.9
2012-04-01	129.6
2012-07-01	130.3
2012-10-01	131.2
2013-01-01	132.0
2013-04-01	133.0
2013-07-01	133.9
2013-10-01	133.8
2014-01-01	134.5
2014-04-01	135.1
2014-07-01	135.3
2014-10-01	136.6
2015-01-01	137.9
2015-04-01	138.4
2015-07-01	139.6
2015-10-01	141.2
2016-01-01	142.6
2016-04-01	143.4
2016-07-01	144.0
2016-10-01	144.0
2017-01-01	144.0
2017-04-01	143.7
2017-07-01	143.9
2017-10-01	143.6
2018-01-01	144.5