Quarter	US Dollars, sum over component sub-periods
2004-01-01	2153830756.8971600
2004-04-01	2538079162.6240000
2004-07-01	2804982592.0593500
2004-10-01	3170213163.9350500
2005-01-01	2818379957.6394600
2005-04-01	3480129761.6395100
2005-07-01	3581585717.2256804
2005-10-01	3948845443.7773600
2006-01-01	3719571743.0125900
2006-04-01	4361946592.0348810
2006-07-01	4623294735.8814000
2006-10-01	4683757913.5321800
2007-01-01	4640026321.0954500
2007-04-01	5514991843.1311900
2007-07-01	5697991860.9847600
2007-10-01	6026468455.1166200
2008-01-01	7227034078.1687200
2008-04-01	8206484377.4732900
2008-07-01	7964755890.9183900
2008-10-01	5580278386.4908090
2009-01-01	3706897637.6201500
2009-04-01	3965613592.3336200
2009-07-01	4621235487.2074500
2009-10-01	4778958528.7298700
2010-01-01	4524727947.7775200
2010-04-01	5038697847.5812900
2010-07-01	5752308460.9622500
2010-10-01	6590572104.2227590
2011-01-01	6758296788.1823700
2011-04-01	7775028380.1496600
2011-07-01	7848281193.3280500
2011-10-01	7548937529.3036700
2012-01-01	7293318382.8799100
2012-04-01	6832707506.3204700
2012-07-01	7777488882.6853600
2012-10-01	8335119981.1362800
2013-01-01	7865417752.6418700
2013-04-01	7702674497.9645100
2013-07-01	8650651256.0644300
2013-10-01	8884111150.8511410
2014-01-01	7618574851.1345300
2014-04-01	8500182947.7257595
2014-07-01	8574587470.2748000
2014-10-01	8085204880.4788800
2015-01-01	6215479375.0481610
2015-04-01	7139770414.6546600
2015-07-01	6842008508.3213900
2015-10-01	6746436917.8643400
2016-01-01	5935773952.8548300
2016-04-01	6831347557.7956200
2016-07-01	6620949224.1222700
2016-10-01	6811560619.5482000
2017-01-01	6917010631.0252700
2017-04-01	7579596753.4216390
2017-07-01	8141239975.9476600
2017-10-01	8664091782.9570700
2018-01-01	8686186263.4447290
2018-04-01	8875066834.8321590