Quarter	Percentage of GDP
1988-04-01	28.2
1988-07-01	27.1
1988-10-01	25.0
1989-01-01	23.5
1989-04-01	21.5
1989-07-01	20.9
1989-10-01	21.3
1990-01-01	21.9
1990-04-01	20.1
1990-07-01	20.1
1990-10-01	21.1
1991-01-01	21.8
1991-04-01	22.8
1991-07-01	24.9
1991-10-01	26.7
1992-01-01	26.6
1992-04-01	27.2
1992-07-01	28.3
1992-10-01	30.7
1993-01-01	32.0
1993-04-01	33.5
1993-07-01	34.7
1993-10-01	36.1
1994-01-01	34.8
1994-04-01	33.8
1994-07-01	33.6
1994-10-01	34.5
1995-01-01	34.6
1995-04-01	35.3
1995-07-01	34.7
1995-10-01	35.3
1996-01-01	34.2
1996-04-01	32.6
1996-07-01	32.8
1996-10-01	33.0
1997-01-01	32.2
1997-04-01	31.4
1997-07-01	31.0
1997-10-01	29.1
1998-01-01	28.7
1998-04-01	27.0
1998-07-01	27.2
1998-10-01	26.2
1999-01-01	24.9
1999-04-01	23.2
1999-07-01	22.8
1999-10-01	21.1
2000-01-01	20.6
2000-04-01	19.5
2000-07-01	18.3
2000-10-01	17.7
2001-01-01	17.1
2001-04-01	16.4
2001-07-01	16.4
2001-10-01	16.0
2002-01-01	14.9
2002-04-01	14.7
2002-07-01	14.9
2002-10-01	14.4
2003-01-01	13.5
2003-04-01	13.3
2003-07-01	12.3
2003-10-01	11.8
2004-01-01	11.7
2004-04-01	11.4
2004-07-01	11.1
2004-10-01	10.9
2005-01-01	10.6
2005-04-01	10.4
2005-07-01	10.0
2005-10-01	9.8
2006-01-01	9.8
2006-04-01	9.3
2006-07-01	9.4
2006-10-01	8.7
2007-01-01	8.4
2007-04-01	8.5
2007-07-01	8.8
2007-10-01	8.4
2008-01-01	8.5
2008-04-01	9.1
2008-07-01	9.0
2008-10-01	9.6
2009-01-01	10.6
2009-04-01	12.4
2009-07-01	13.9
2009-10-01	14.8
2010-01-01	16.3
2010-04-01	17.8
2010-07-01	18.6
2010-10-01	18.9
2011-01-01	19.9
2011-04-01	21.0
2011-07-01	23.0
2011-10-01	24.4
2012-01-01	25.0
2012-04-01	26.3
2012-07-01	27.8
2012-10-01	28.3
2013-01-01	28.5
2013-04-01	27.8
2013-07-01	29.3
2013-10-01	30.0
2014-01-01	30.8
2014-04-01	31.7
2014-07-01	33.1
2014-10-01	34.5
2015-01-01	36.1
2015-04-01	35.2
2015-07-01	37.5
2015-10-01	37.0
2016-01-01	38.7
2016-04-01	39.0
2016-07-01	40.4
2016-10-01	39.1
2017-01-01	39.7
2017-04-01	40.0
2017-07-01	39.4
2017-10-01	40.1
2018-01-01	40.2