Quarter	US Dollars, sum over component sub-periods, Seasonally Adjusted
2006-01-01	7759936519.122010
2006-04-01	7792709781.941530
2006-07-01	8111349657.266891
2006-10-01	8923904041.669569
2007-01-01	9667271387.260920
2007-04-01	9638742407.566380
2007-07-01	11027587714.802900
2007-10-01	12190898490.369800
2008-01-01	13509856392.356300
2008-04-01	14457071071.838800
2008-07-01	14342955454.958698
2008-10-01	12286317080.846200
2009-01-01	8798045732.291200
2009-04-01	8593450285.464220
2009-07-01	9203940391.257490
2009-10-01	10550697590.987100
2010-01-01	11706864407.734600
2010-04-01	13034754042.010600
2010-07-01	13981139773.429700
2010-10-01	15436005476.825200
2011-01-01	16262130124.862501
2011-04-01	17720147813.126700
2011-07-01	18804638493.534900
2011-10-01	17981861478.475800
2012-01-01	16173503156.787699
2012-04-01	15750302894.854000
2012-07-01	16172833055.160900
2012-10-01	16946103103.197401
2013-01-01	17107250838.970999
2013-04-01	18673290773.557200
2013-07-01	17667097602.784700
2013-10-01	17845353904.687100
2014-01-01	17475338900.267300
2014-04-01	16150355776.866900
2014-07-01	15269999240.353300
2014-10-01	14003272172.512499
2015-01-01	14264458861.393599
2015-04-01	14633752580.844600
2015-07-01	14872444400.185600
2015-10-01	13823574047.576100
2016-01-01	13499426457.233599
2016-04-01	13399238033.068300
2016-07-01	12892863362.321400
2016-10-01	13712977827.376701
2017-01-01	14700555775.547000
2017-04-01	15859101045.842701
2017-07-01	16159970569.420700
2017-10-01	17273652339.189500
2018-01-01	17824036493.894400
2018-04-01	16847897587.471200