Quarter	Dollars
1999-01-01	261519157525.142
1999-04-01	252737298867.412
1999-07-01	256143749016.473
1999-10-01	256780190517.595
2000-01-01	256904275914.121
2000-04-01	253694932533.754
2000-07-01	248347328081.462
2000-10-01	242327027119.920
2001-01-01	243540653763.404
2001-04-01	238659643008.425
2001-07-01	242145714005.300
2001-10-01	234931169332.141
2002-01-01	235633749396.446
2002-04-01	238565008613.320
2002-07-01	245963466208.207
2002-10-01	247168355077.271
2003-01-01	236442582648.688
2003-04-01	235517681464.820
2003-07-01	234124254150.050
2003-10-01	223145058851.467
2004-01-01	210808784952.385
2004-04-01	211735945042.149
2004-07-01	207719975483.326
2004-10-01	211970779796.664
2005-01-01	203801983767.018
2005-04-01	197945611359.974
2005-07-01	194737805906.312
2005-10-01	184713500140.994
2006-01-01	178391574509.205
2006-04-01	184273806000.695
2006-07-01	190991262912.502
2006-10-01	197005463398.123
2007-01-01	201391576207.016
2007-04-01	205930104704.313
2007-07-01	217614319095.749
2007-10-01	215295816192.854
2008-01-01	233700505684.061
2008-04-01	229526524956.448
2008-07-01	222699024134.025
2008-10-01	218716648292.235
2009-01-01	206750704956.941
2009-04-01	214397838135.348
2009-07-01	285204796264.796
2009-10-01	282776580917.277
2010-01-01	284905516387.023
2010-04-01	283879734744.885
2010-07-01	300143376464.521
2010-10-01	300242477220.024
2011-01-01	320013616178.739
2011-04-01	317123886282.134
2011-07-01	310876119850.232
2011-10-01	316705627155.697
2012-01-01	319751064998.412
2012-04-01	328712735801.758
2012-07-01	332770399404.233
2012-10-01	332540664081.776
2013-01-01	326734985677.116
2013-04-01	324856862086.883
2013-07-01	332522722459.130
2013-10-01	330961335312.720
2014-01-01	338771880786.582
2014-04-01	340257454440.934
2014-07-01	329427154310.552
2014-10-01	327597434500.332
2015-01-01	330929475991.616
2015-04-01	330337294379.271
2015-07-01	332253192553.483
2015-10-01	333872438158.836
2016-01-01	340660096857.952
2016-04-01	344268497926.822
2016-07-01	352396510025.446
2016-10-01	344413203331.292
2017-01-01	346031152942.274
2017-04-01	347977055514.973
2017-07-01	350717928115.887
2017-10-01	353249050972.537
2018-01-01	370170373172.735
