Quarter	US Dollars, sum over component sub-periods
2000-01-01	8990720515.011290
2000-04-01	8701161870.659710
2000-07-01	9409874995.568800
2000-10-01	8380903985.719240
2001-01-01	8883085606.875269
2001-04-01	8923240899.558899
2001-07-01	9692223395.153360
2001-10-01	9118061903.767380
2002-01-01	8395128502.960140
2002-04-01	9278451006.445560
2002-07-01	11079281097.815699
2002-10-01	10283700121.637001
2003-01-01	10360039354.224400
2003-04-01	11545428819.950998
2003-07-01	12176907402.826601
2003-10-01	11750879821.385200
2004-01-01	12012689737.897001
2004-04-01	12596630816.841600
2004-07-01	13919080274.499300
2004-10-01	13711833361.778500
2005-01-01	13074317077.764400
2005-04-01	13598085006.724000
2005-07-01	14570474740.666399
2005-10-01	12857093954.890100
2006-01-01	12819280233.081500
2006-04-01	14556739841.533298
2006-07-01	15449523853.655700
2006-10-01	13941411453.686500
2007-01-01	15444807212.912100
2007-04-01	17855302366.079197
2007-07-01	19459575660.207200
2007-10-01	20413354575.743600
2008-01-01	20165872223.962700
2008-04-01	22545184442.734600
2008-07-01	25191760402.477000
2008-10-01	21247721824.139600
2009-01-01	18295494195.501900
2009-04-01	19208511687.751500
2009-07-01	22689381318.176003
2009-10-01	22216685654.280900
2010-01-01	20459015745.307500
2010-04-01	20821468550.509800
2010-07-01	22829253965.145900
2010-10-01	23565796956.311800
2011-01-01	21045701988.907400
2011-04-01	23273435309.511200
2011-07-01	27272088128.392300
2011-10-01	23672546886.710700
2012-01-01	22721504962.261400
2012-04-01	23788932115.820600
2012-07-01	25718953362.066000
2012-10-01	25744529656.937000
2013-01-01	24047790841.240700
2013-04-01	24661384152.668300
2013-07-01	27407429876.464900
2013-10-01	28111081140.203700
2014-01-01	27290615436.009500
2014-04-01	29037754010.409500
2014-07-01	32452135577.221700
2014-10-01	28957277845.524200
2015-01-01	26747334400.320297
2015-04-01	24352959081.093597
2015-07-01	27787988852.818300
2015-10-01	28175354287.628200
2016-01-01	24307564746.377600
2016-04-01	25973129790.889202
2016-07-01	27756203578.843500
2016-10-01	30589408728.253700
2017-01-01	25902627522.293700
2017-04-01	26565112229.488300
2017-07-01	30777526150.754597
2017-10-01	32504194736.392800
2018-01-01	30332386235.140700
2018-04-01	30017235019.882700