Quarter	US Dollars, sum over component sub-periods
1999-01-01	93074388579.745500
1999-04-01	215893423489.309000
1999-07-01	123772889375.584000
1999-10-01	190793962665.267970
2000-01-01	301742993967.144000
2000-04-01	201654255028.719000
2000-07-01	231588143836.646000
2000-10-01	159936786777.012000
2001-01-01	126966013443.280000
2001-04-01	132367742951.433000
2001-07-01	51634049757.241806
2001-10-01	72964939451.183100
2002-01-01	65732482177.178696
2002-04-01	99451265602.129210
2002-07-01	99736689635.110490
2002-10-01	92197718498.903610
2003-01-01	119135484558.644990
2003-04-01	31874529173.894200
2003-07-01	54647365017.149300
2003-10-01	90601185192.453400
2004-01-01	35642912791.633705
2004-04-01	102500749267.877990
2004-07-01	83913411665.117500
2004-10-01	122967861361.021000
2005-01-01	115956074632.177000
2005-04-01	105401936732.209000
2005-07-01	231869106569.024020
2005-10-01	154527615575.228000
2006-01-01	246860225059.410980
2006-04-01	188781383084.147000
2006-07-01	188096837662.815000
2006-10-01	163778335535.345000
2007-01-01	266796292200.468020
2007-04-01	214980278194.092000
2007-07-01	248828242431.082000
2007-10-01	168257724475.449000
2008-01-01	229281633804.322000
2008-04-01	192766605225.117000
2008-07-01	164972253055.728000
2008-10-01	190990389966.346000
2009-01-01	65972154644.762890
2009-04-01	13634817717.639100
2009-07-01	111087150887.241990
2009-10-01	109600184571.631010
2010-01-01	104229838702.879000
2010-04-01	42755487622.690700
2010-07-01	185843709745.413020
2010-10-01	169733019128.754000
2011-01-01	96419121787.656400
2011-04-01	164568495561.099000
2011-07-01	127486279848.534000
2011-10-01	113783516685.363000
2012-01-01	121995662716.573000
2012-04-01	137628264023.208000
2012-07-01	71848550056.964900
2012-10-01	113921760187.374010
2013-01-01	54225809289.526695
2013-04-01	239471324960.608000
2013-07-01	124171654835.363000
2013-10-01	120857330737.508990
2014-01-01	98773877988.961900
2014-04-01	78971502107.692900
2014-07-01	113891185722.709000
2014-10-01	146196911230.254000
2015-01-01	332757679455.938960
2015-04-01	149969559441.488980
2015-07-01	122968644784.870990
2015-10-01	125877838885.273000
2016-01-01	310663447021.326000
2016-04-01	293438035420.740050
2016-07-01	216551500324.566000
2016-10-01	136473772714.734000
2017-01-01	198463226852.782000
2017-04-01	150450594234.275000
2017-07-01	185664792958.651980
2017-10-01	76541417646.228100
2018-01-01	146636809239.044000