Quarter	Percentage of GDP
1990-10-01	37.5
1991-01-01	35.4
1991-04-01	33.4
1991-07-01	32.0
1991-10-01	30.8
1992-01-01	28.4
1992-04-01	26.4
1992-07-01	24.4
1992-10-01	22.7
1993-01-01	21.9
1993-04-01	21.3
1993-07-01	20.8
1993-10-01	20.4
1994-01-01	22.7
1994-04-01	24.7
1994-07-01	26.5
1994-10-01	28.1
1995-01-01	30.2
1995-04-01	31.6
1995-07-01	32.3
1995-10-01	32.4
1996-01-01	30.1
1996-04-01	28.3
1996-07-01	26.7
1996-10-01	25.2
1997-01-01	23.9
1997-04-01	22.7
1997-07-01	21.6
1997-10-01	20.6
1998-01-01	21.1
1998-04-01	21.5
1998-07-01	21.8
1998-10-01	22.2
1999-01-01	21.8
1999-04-01	21.4
1999-07-01	20.9
1999-10-01	20.5
2000-01-01	20.0
2000-04-01	19.6
2000-07-01	19.3
2000-10-01	19.1
2001-01-01	18.8
2001-04-01	18.6
2001-07-01	18.5
2001-10-01	18.5
2002-01-01	19.1
2002-04-01	19.5
2002-07-01	19.9
2002-10-01	20.2
2003-01-01	20.3
2003-04-01	20.5
2003-07-01	20.9
2003-10-01	21.2
2004-01-01	21.2
2004-04-01	20.9
2004-07-01	20.5
2004-10-01	20.2
2005-01-01	19.9
2005-04-01	19.8
2005-07-01	19.7
2005-10-01	19.6
2006-01-01	19.5
2006-04-01	20.0
2006-07-01	20.6
2006-10-01	20.0
2007-01-01	20.0
2007-04-01	20.3
2007-07-01	20.6
2007-10-01	20.5
2008-01-01	20.5
2008-04-01	20.2
2008-07-01	20.4
2008-10-01	24.1
2009-01-01	24.9
2009-04-01	26.0
2009-07-01	27.6
2009-10-01	27.5
2010-01-01	27.7
2010-04-01	27.9
2010-07-01	27.7
2010-10-01	26.9
2011-01-01	26.9
2011-04-01	27.1
2011-07-01	28.0
2011-10-01	27.7
2012-01-01	28.1
2012-04-01	27.8
2012-07-01	28.4
2012-10-01	28.2
2013-01-01	28.7
2013-04-01	29.5
2013-07-01	30.3
2013-10-01	30.8
2014-01-01	31.9
2014-04-01	32.0
2014-07-01	32.7
2014-10-01	32.6
2015-01-01	33.3
2015-04-01	33.4
2015-07-01	34.2
2015-10-01	35.0
2016-01-01	35.8
2016-04-01	35.2
2016-07-01	35.9
2016-10-01	37.1
2017-01-01	36.0
2017-04-01	35.2
2017-07-01	35.6
2017-10-01	35.4
2018-01-01	35.5