Quarter	Percentage of GDP
1996-10-01	61.1
1997-01-01	60.4
1997-04-01	61.8
1997-07-01	64.1
1997-10-01	67.1
1998-01-01	64.5
1998-04-01	67.5
1998-07-01	68.9
1998-10-01	69.3
1999-01-01	67.2
1999-04-01	65.9
1999-07-01	66.3
1999-10-01	66.3
2000-01-01	63.7
2000-04-01	63.1
2000-07-01	63.3
2000-10-01	64.5
2001-01-01	62.0
2001-04-01	62.5
2001-07-01	63.5
2001-10-01	64.0
2002-01-01	65.9
2002-04-01	67.9
2002-07-01	69.6
2002-10-01	70.0
2003-01-01	69.5
2003-04-01	70.7
2003-07-01	71.7
2003-10-01	71.8
2004-01-01	70.6
2004-04-01	70.7
2004-07-01	70.8
2004-10-01	71.1
2005-01-01	69.7
2005-04-01	69.7
2005-07-01	70.4
2005-10-01	71.1
2006-01-01	71.6
2006-04-01	72.8
2006-07-01	73.3
2006-10-01	74.1
2007-01-01	73.2
2007-04-01	74.9
2007-07-01	76.5
2007-10-01	76.9
2008-01-01	75.1
2008-04-01	76.3
2008-07-01	78.0
2008-10-01	80.3
2009-01-01	85.0
2009-04-01	88.6
2009-07-01	91.4
2009-10-01	92.3
2010-01-01	89.5
2010-04-01	91.5
2010-07-01	92.9
2010-10-01	94.4
2011-01-01	91.1
2011-04-01	92.4
2011-07-01	93.7
2011-10-01	95.6
2012-01-01	95.5
2012-04-01	97.8
2012-07-01	99.4
2012-10-01	101.8
2013-01-01	103.8
2013-04-01	106.5
2013-07-01	108.7
2013-10-01	109.8
2014-01-01	111.6
2014-04-01	113.3
2014-07-01	114.2
2014-10-01	116.4
2015-01-01	117.6
2015-04-01	119.4
2015-07-01	121.6
2015-10-01	124.7
2016-01-01	126.5
2016-04-01	127.3
2016-07-01	128.1
2016-10-01	128.6
2017-01-01	128.0
2017-04-01	128.1
2017-07-01	128.9
2017-10-01	128.7
2018-01-01	130.5