Quarter	Percentage of GDP
1997-10-01	84.1
1998-01-01	86.7
1998-04-01	89.4
1998-07-01	90.0
1998-10-01	94.7
1999-01-01	97.7
1999-04-01	103.3
1999-07-01	104.7
1999-10-01	107.8
2000-01-01	111.1
2000-04-01	113.9
2000-07-01	114.6
2000-10-01	116.5
2001-01-01	120.7
2001-04-01	122.8
2001-07-01	122.1
2001-10-01	123.8
2002-01-01	126.7
2002-04-01	129.9
2002-07-01	129.1
2002-10-01	129.4
2003-01-01	133.7
2003-04-01	136.8
2003-07-01	137.5
2003-10-01	139.2
2004-01-01	144.7
2004-04-01	147.6
2004-07-01	145.1
2004-10-01	146.2
2005-01-01	148.1
2005-04-01	149.8
2005-07-01	148.5
2005-10-01	148.7
2006-01-01	148.3
2006-04-01	147.4
2006-07-01	147.3
2006-10-01	147.0
2007-01-01	145.7
2007-04-01	145.7
2007-07-01	144.9
2007-10-01	144.9
2008-01-01	145.2
2008-04-01	146.1
2008-07-01	145.9
2008-10-01	147.6
2009-01-01	153.2
2009-04-01	159.7
2009-07-01	163.2
2009-10-01	166.9
2010-01-01	168.7
2010-04-01	171.0
2010-07-01	170.2
2010-10-01	173.0
2011-01-01	174.3
2011-04-01	178.8
2011-07-01	181.6
2011-10-01	185.7
2012-01-01	187.1
2012-04-01	189.1
2012-07-01	190.7
2012-10-01	192.5
2013-01-01	194.2
2013-04-01	196.4
2013-07-01	196.1
2013-10-01	197.0
2014-01-01	196.2
2014-04-01	198.0
2014-07-01	198.5
2014-10-01	200.8
2015-01-01	200.6
2015-04-01	200.3
2015-07-01	198.2
2015-10-01	197.9
2016-01-01	197.7
2016-04-01	199.2
2016-07-01	200.1
2016-10-01	200.1
2017-01-01	200.6
2017-04-01	201.5
2017-07-01	200.9
2017-10-01	201.0
2018-01-01	200.4