Quarter	Percent of GDP, Seasonally Adjusted
1999-01-01	52.8400802211141
1999-04-01	60.6465214518392
1999-07-01	49.9515498851242
1999-10-01	54.8676678207948
2000-01-01	57.4176256329655
2000-04-01	57.3884055343148
2000-07-01	59.2681137474886
2000-10-01	58.3096633558425
2001-01-01	55.5418297310183
2001-04-01	55.3954712287506
2001-07-01	53.2030094910608
2001-10-01	51.1862903267204
2002-01-01	50.1312474621056
2002-04-01	49.0544615333760
2002-07-01	48.5778844768314
2002-10-01	48.7545434327737
2003-01-01	48.5317284220110
2003-04-01	47.3959330490591
2003-07-01	46.9507406204760
2003-10-01	47.8175981873368
2004-01-01	47.8150685584170
2004-04-01	52.6827131811904
2004-07-01	52.0700680461343
2004-10-01	52.6589641660763
2005-01-01	53.0187462916385
2005-04-01	53.0345760418342
2005-07-01	56.8773420365828
2005-10-01	59.4118038451522
2006-01-01	59.4890887286916
2006-04-01	58.8353192307136
2006-07-01	60.8373667845964
2006-10-01	63.8295768624645
2007-01-01	64.5922117036541
2007-04-01	66.0159382244353
2007-07-01	65.9703271029758
2007-10-01	66.3121134069871
2008-01-01	68.9026588217442
2008-04-01	68.8449628770053
2008-07-01	68.4027574144328
2008-10-01	60.4118990610766
2009-01-01	52.2306148263687
2009-04-01	50.6198762589398
2009-07-01	53.4086940395298
2009-10-01	53.8518202132812
2010-01-01	56.9931788378841
2010-04-01	61.9707628279111
2010-07-01	63.3699468512000
2010-10-01	66.8182389405247
2011-01-01	68.2137335897411
2011-04-01	68.7797394754100
2011-07-01	70.1702872350222
2011-10-01	68.9436197609775
2012-01-01	70.1600574793175
2012-04-01	70.0919115721270
2012-07-01	69.5223489077149
2012-10-01	68.6973711011742
2013-01-01	70.1921373610028
2013-04-01	70.1758969565808
2013-07-01	68.6724056820496
2013-10-01	69.3055185300827
2014-01-01	66.7929438528037
2014-04-01	67.8376211357341
2014-07-01	68.9411345411546
2014-10-01	68.3725106849886
2015-01-01	68.8188279591603
2015-04-01	69.4405704892959
2015-07-01	68.9334736080230
2015-10-01	68.9040215413562
2016-01-01	68.5602375631907
2016-04-01	67.6535639182988
2016-07-01	68.7462185521651
2016-10-01	69.2818429305955
2017-01-01	73.3700697250454
2017-04-01	73.7968928327444
2017-07-01	74.5052398418979
2017-10-01	75.3548688142731
2018-01-01	77.3014533514556
2018-04-01	77.2136555529170