Quarter	US Dollars, sum over component sub-periods
1998-01-01	24412873270.00000
1998-04-01	28688246340.00000
1998-07-01	27888114540.00000
1998-10-01	37082169430.00000
1999-01-01	27280139070.00000
1999-04-01	34718791810.00000
1999-07-01	34575586280.00000
1999-10-01	39831299850.00000
2000-01-01	38804932270.00000
2000-04-01	46355308230.00000
2000-07-01	51334431520.00000
2000-10-01	51647752090.00000
2001-01-01	46216332150.00000
2001-04-01	52139071820.00000
2001-07-01	54342270800.00000
2001-10-01	52003866710.00000
2002-01-01	48164221670.00000
2002-04-01	59631918100.00000
2002-07-01	70807282400.00000
2002-10-01	70485904520.00000
2003-01-01	75567295190.00000
2003-04-01	84901274660.00000
2003-07-01	97427289400.00000
2003-10-01	98929369070.00000
2004-01-01	108031840600.00000
2004-04-01	121349216100.00000
2004-07-01	126256645600.00000
2004-10-01	127822079000.00000
2005-01-01	119345036300.00000
2005-04-01	139958531000.00000
2005-07-01	149130845300.00000
2005-10-01	156307113800.00000
2006-01-01	150483953000.00000
2006-04-01	167210361400.00000
2006-07-01	184216274300.00000
2006-10-01	180063696000.00000
2007-01-01	176748279200.00000
2007-04-01	196176355900.00000
2007-07-01	222510200500.00000
2007-10-01	224455997500.00000
2008-01-01	230132626500.00000
2008-04-01	265686762999.99997
2008-07-01	284615621100.00000
2008-10-01	209652577700.00000
2009-01-01	160325772100.00000
2009-04-01	212387204100.00000
2009-07-01	251951651900.00000
2009-10-01	258949327600.00000
2010-01-01	268785464800.00003
2010-04-01	307309129800.00000
2010-07-01	324279493800.00000
2010-10-01	339612203500.00000
2011-01-01	361165852600.00000
2011-04-01	387457971400.00000
2011-07-01	412683305900.00000
2011-10-01	417797560900.00000
2012-01-01	392707186100.00000
2012-04-01	417657517100.00000
2012-07-01	421555561800.00000
2012-10-01	430026394700.00000
2013-01-01	426987194100.00000
2013-04-01	438852240600.00000
2013-07-01	459399743000.00000
2013-10-01	464368459600.00000
2014-01-01	438506904300.00000
2014-04-01	448271206000.00000
2014-07-01	466694691600.00000
2014-10-01	455246855300.00000
2015-01-01	364941223200.00000
2015-04-01	390099694800.00000
2015-07-01	400103673200.00000
2015-10-01	411417752900.00000
2016-01-01	321140128500.00000
2016-04-01	368833503400.00000
2016-07-01	389585613200.00000
2016-10-01	421076394500.00000
2017-01-01	392705729900.00000
2017-04-01	419850768500.00000
2017-07-01	447977397500.00000
2017-10-01	479778260100.00000
2018-01-01	477148836600.00000
2018-04-01	504096701700.00000