Quarter	US Dollars, sum over component sub-periods
2005-01-01	6367593625.140240
2005-04-01	7236503598.272620
2005-07-01	8171546686.151999
2005-10-01	7308510875.571100
2006-01-01	6302382072.896430
2006-04-01	8004506325.675890
2006-07-01	9037308823.529411
2006-10-01	8275037209.860921
2007-01-01	8556239616.276571
2007-04-01	9747883675.187210
2007-07-01	11369524206.093199
2007-10-01	11550094018.436998
2008-01-01	11196156968.560700
2008-04-01	12817320884.470701
2008-07-01	13496470285.964800
2008-10-01	10063209680.811400
2009-01-01	8129555273.480639
2009-04-01	9553100102.210920
2009-07-01	11301232851.926400
2009-10-01	10272735509.589800
2010-01-01	10687798893.167700
2010-04-01	11310057116.869400
2010-07-01	12402005126.071300
2010-10-01	11773497590.021000
2011-01-01	10712227264.389800
2011-04-01	12570116456.894901
2011-07-01	13752967199.603699
2011-10-01	13024134312.433700
2012-01-01	11945035787.870800
2012-04-01	13120516120.118100
2012-07-01	14022846870.062300
2012-10-01	13390777998.594000
2013-01-01	12973194497.381401
2013-04-01	13962635009.979700
2013-07-01	15083993333.292599
2013-10-01	14315619274.267900
2014-01-01	13457578759.722700
2014-04-01	14851036915.540201
2014-07-01	15821804625.137200
2014-10-01	13424675079.541302
2015-01-01	11460465436.382900
2015-04-01	11930517957.949200
2015-07-01	12437778998.762400
2015-10-01	11439571636.407299
2016-01-01	8414399662.559690
2016-04-01	9183649797.348900
2016-07-01	9057591004.741340
2016-10-01	9283977943.299250
2017-01-01	8334787661.203480
2017-04-01	8939313491.805809
2017-07-01	9256745131.609090
2017-10-01	10130071015.804300
2018-01-01	9387602301.951870
2018-04-01	9989468300.141380