Quarter	US Dollars, sum over component sub-periods
1993-01-01	1794126693.33926000
1993-04-01	1129324231.90708000
1993-07-01	2021741623.71423980
1993-10-01	1275200983.24295020
1994-01-01	1067649879.82752000
1994-04-01	1345209195.67660000
1994-07-01	605976831.76011110
1994-10-01	1947566247.15837000
1995-01-01	2071837272.49931000
1995-04-01	2040625210.27954980
1995-07-01	3676414981.84211000
1995-10-01	2518673314.18289000
1996-01-01	98598292.64280830
1996-04-01	482956719.33269400
1996-07-01	193771760.38729900
1996-10-01	974495603.64506700
1997-01-01	162406628.95849800
1997-04-01	664823845.97053500
1997-07-01	434829108.47544200
1997-10-01	1592702195.99751000
1998-01-01	-610583656.11489500
1998-04-01	2258256005.30093000
1998-07-01	1034232096.29631000
1998-10-01	928591439.87021200
1999-01-01	1778073357.41558000
1999-04-01	1168926563.06127000
1999-07-01	1510115329.58788010
1999-10-01	1837893017.55818990
2000-01-01	-1490628.22227906
2000-04-01	690401234.08540500
2000-07-01	1031348167.09346000
2000-10-01	452888789.59683900
2001-01-01	984261637.06163100
2001-04-01	1150607806.65401980
2001-07-01	-7172806.90625218
2001-10-01	984939900.70233390
2002-01-01	-949853278.22218000
2002-04-01	5158317161.40780000
2002-07-01	220741938.72186800
2002-10-01	874912599.89863100
2003-01-01	-470170646.92035097
2003-04-01	119945237.74749200
2003-07-01	870957619.28595510
2003-10-01	640983294.38161600
2004-01-01	1372184547.39093000
2004-04-01	3133447243.88642000
2004-07-01	852120572.98532400
2004-10-01	2133966832.84291030
2005-01-01	2895101144.08742000
2005-04-01	7422600486.52938000
2005-07-01	1988322708.52243000
2005-10-01	2252765639.99002030
2006-01-01	1010523320.11010000
2006-04-01	2199434969.17528000
2006-07-01	329570659.48359096
2006-10-01	4711172407.54614000
2007-01-01	2471277695.79574970
2007-04-01	5014473097.51153000
2007-07-01	844794509.11286310
2007-10-01	9530169007.79243000
2008-01-01	7720169615.94632000
2008-04-01	10342822919.03270000
2008-07-01	1261778574.68960000
2008-10-01	-3946920393.09896040
2009-01-01	-352787158.01470700
2009-04-01	1254674317.64740000
2009-07-01	-902175195.22455800
2009-10-01	2782104753.57799000
2010-01-01	2137320975.93068000
2010-04-01	5688989179.34260100
2010-07-01	3352300033.58632000
2010-10-01	874393604.00062000
2011-01-01	-661379328.81176010
2011-04-01	450334345.54815900
2011-07-01	1906425037.00963000
2011-10-01	2821971235.99460030
2012-01-01	6567395848.79450000
2012-04-01	-1154437699.18491980
2012-07-01	602017017.23745310
2012-10-01	6320929886.50030000
2013-01-01	4641220985.12743000
2013-04-01	3440519137.76902960
2013-07-01	2773087032.18986030
2013-10-01	10692314387.96320200
2014-01-01	6645521310.81040000
2014-04-01	1688434276.01744990
2014-07-01	750975699.03310300
2014-10-01	4096292357.20264000
2015-01-01	5626549923.86339000
2015-04-01	3037059717.71561000
2015-07-01	8410807490.64608100
2015-10-01	1127845367.03501000
2016-01-01	10003970664.78280000
2016-04-01	4384268560.85175000
2016-07-01	6264436942.73368000
2016-10-01	9085670020.04509000
2017-01-01	45947797056.62100000
2017-04-01	6805624333.20340000
2017-07-01	4686001794.59194000
2017-10-01	782947601.17551300
2018-01-01	1335207210.67204000
2018-04-01	1618053372.49689000