Quarter	Percentage of GDP
1996-01-01	35.4
1996-04-01	34.6
1996-07-01	32.4
1996-10-01	30.5
1997-01-01	29.6
1997-04-01	30.3
1997-07-01	30.7
1997-10-01	31.5
1998-01-01	32.2
1998-04-01	32.3
1998-07-01	32.4
1998-10-01	32.8
1999-01-01	31.3
1999-04-01	30.5
1999-07-01	31.3
1999-10-01	31.1
2000-01-01	28.3
2000-04-01	29.9
2000-07-01	29.5
2000-10-01	30.6
2001-01-01	31.4
2001-04-01	29.4
2001-07-01	30.9
2001-10-01	30.7
2002-01-01	30.6
2002-04-01	30.1
2002-07-01	31.0
2002-10-01	30.3
2003-01-01	30.4
2003-04-01	30.2
2003-07-01	29.8
2003-10-01	29.9
2004-01-01	28.7
2004-04-01	29.1
2004-07-01	29.4
2004-10-01	29.4
2005-01-01	30.1
2005-04-01	30.1
2005-07-01	30.6
2005-10-01	31.9
2006-01-01	32.0
2006-04-01	33.0
2006-07-01	33.9
2006-10-01	35.5
2007-01-01	35.6
2007-04-01	36.4
2007-07-01	38.5
2007-10-01	40.7
2008-01-01	41.5
2008-04-01	42.7
2008-07-01	44.2
2008-10-01	45.8
2009-01-01	44.7
2009-04-01	45.1
2009-07-01	46.3
2009-10-01	47.5
2010-01-01	47.4
2010-04-01	48.1
2010-07-01	50.7
2010-10-01	52.8
2011-01-01	53.4
2011-04-01	54.5
2011-07-01	55.7
2011-10-01	58.1
2012-01-01	58.5
2012-04-01	60.2
2012-07-01	60.8
2012-10-01	62.5
2013-01-01	62.5
2013-04-01	63.0
2013-07-01	63.4
2013-10-01	64.2
2014-01-01	63.6
2014-04-01	64.3
2014-07-01	64.8
2014-10-01	66.0
2015-01-01	65.8
2015-04-01	66.0
2015-07-01	66.5
2015-10-01	66.8
2016-01-01	65.5
2016-04-01	64.4
2016-07-01	62.8
2016-10-01	62.3
2017-01-01	61.1
2017-04-01	59.6
2017-07-01	60.7
2017-10-01	59.7
2018-01-01	59.5