Quarter	Percentage of GDP
1990-10-01	125.1
1991-01-01	128.9
1991-04-01	129.0
1991-07-01	131.0
1991-10-01	130.9
1992-01-01	131.5
1992-04-01	131.8
1992-07-01	133.4
1992-10-01	135.1
1993-01-01	136.4
1993-04-01	138.1
1993-07-01	141.3
1993-10-01	139.5
1994-01-01	140.2
1994-04-01	141.7
1994-07-01	144.5
1994-10-01	143.3
1995-01-01	143.7
1995-04-01	144.3
1995-07-01	144.3
1995-10-01	144.1
1996-01-01	145.5
1996-04-01	148.1
1996-07-01	152.5
1996-10-01	153.2
1997-01-01	159.0
1997-04-01	160.2
1997-07-01	162.3
1997-10-01	169.7
1998-01-01	168.9
1998-04-01	169.2
1998-07-01	173.9
1998-10-01	171.5
1999-01-01	177.7
1999-04-01	169.9
1999-07-01	166.4
1999-10-01	157.9
2000-01-01	157.6
2000-04-01	154.4
2000-07-01	154.3
2000-10-01	151.6
2001-01-01	152.8
2001-04-01	152.5
2001-07-01	154.6
2001-10-01	153.5
2002-01-01	156.4
2002-04-01	158.7
2002-07-01	160.5
2002-10-01	160.5
2003-01-01	160.8
2003-04-01	160.1
2003-07-01	160.1
2003-10-01	159.9
2004-01-01	160.1
2004-04-01	158.3
2004-07-01	158.3
2004-10-01	156.1
2005-01-01	158.3
2005-04-01	161.6
2005-07-01	161.3
2005-10-01	162.1
2006-01-01	165.1
2006-04-01	170.0
2006-07-01	173.7
2006-10-01	176.6
2007-01-01	179.2
2007-04-01	181.3
2007-07-01	181.8
2007-10-01	183.3
2008-01-01	187.6
2008-04-01	191.5
2008-07-01	193.7
2008-10-01	199.8
2009-01-01	204.6
2009-04-01	208.6
2009-07-01	209.9
2009-10-01	208.2
2010-01-01	209.5
2010-04-01	208.9
2010-07-01	208.4
2010-10-01	204.9
2011-01-01	206.6
2011-04-01	208.0
2011-07-01	210.7
2011-10-01	210.7
2012-01-01	213.0
2012-04-01	215.3
2012-07-01	217.6
2012-10-01	216.7
2013-01-01	221.8
2013-04-01	222.7
2013-07-01	221.9
2013-10-01	220.3
2014-01-01	222.6
2014-04-01	224.1
2014-07-01	226.5
2014-10-01	227.1
2015-01-01	230.3
2015-04-01	230.9
2015-07-01	233.1
2015-10-01	232.0
2016-01-01	233.8
2016-04-01	234.7
2016-07-01	234.4
2016-10-01	232.8
2017-01-01	233.3
2017-04-01	234.5
2017-07-01	232.6
2017-10-01	231.2
2018-01-01	232.8