Quarter	US Dollars, sum over component sub-periods
1999-01-01	65168120526.919495
1999-04-01	66760194393.538506
1999-07-01	73251546012.450500
1999-10-01	72305262259.573400
2000-01-01	67442004219.031200
2000-04-01	67441195386.120500
2000-07-01	72344378339.184510
2000-10-01	72970007489.808610
2001-01-01	70946216649.189500
2001-04-01	68487330979.115300
2001-07-01	76222206409.008700
2001-10-01	73969495725.480100
2002-01-01	67186625600.303900
2002-04-01	71441175963.797000
2002-07-01	80791302125.961000
2002-10-01	80285474842.748200
2003-01-01	85042391333.397200
2003-04-01	85832508544.772600
2003-07-01	91163585252.987700
2003-10-01	91323808962.735300
2004-01-01	98719331651.865600
2004-04-01	102201263299.595000
2004-07-01	109752402189.032000
2004-10-01	113535534718.288010
2005-01-01	117206130673.673000
2005-04-01	115031676727.187990
2005-07-01	120579370471.642000
2005-10-01	113562413391.256010
2006-01-01	118366331445.571000
2006-04-01	124241829850.429000
2006-07-01	135871587983.031000
2006-10-01	142365414895.488000
2007-01-01	140656450207.660000
2007-04-01	152340981440.630000
2007-07-01	167644071765.807000
2007-10-01	176586703909.171000
2008-01-01	177164528703.998000
2008-04-01	192437746651.610020
2008-07-01	192189139718.136000
2008-10-01	166109955830.750000
2009-01-01	142655934899.730000
2009-04-01	153459734601.748020
2009-07-01	167468289446.903000
2009-10-01	174415380038.822020
2010-01-01	156852915303.490020
2010-04-01	156837019332.587000
2010-07-01	168606931662.424000
2010-10-01	178441485005.097000
2011-01-01	169572876020.152980
2011-04-01	183638487180.286000
2011-07-01	193238593687.574980
2011-10-01	184540774159.305000
2012-01-01	169755581775.363000
2012-04-01	176727490676.612000
2012-07-01	183493901822.278000
2012-10-01	186605985847.272000
2013-01-01	177778159430.565000
2013-04-01	185924869425.304020
2013-07-01	198549218813.637020
2013-10-01	204976916879.339000
2014-01-01	195193752527.951000
2014-04-01	209019446829.085000
2014-07-01	217122416411.415000
2014-10-01	211928416061.717000
2015-01-01	185031665237.501980
2015-04-01	224065362728.954000
2015-07-01	202646876941.304020
2015-10-01	218081050258.050020
2016-01-01	196527019168.004000
2016-04-01	208697445999.434020
2016-07-01	215310876784.940000
2016-10-01	224322330673.860020
2017-01-01	190875374277.984000
2017-04-01	208930126093.854000
2017-07-01	221265807445.873020
2017-10-01	233099021215.290000
2018-01-01	218652965621.373020
2018-04-01	223343047167.858000