Quarter	US Dollars, sum over component sub-periods
1999-01-01	57888517618.432594
1999-04-01	48768090399.439400
1999-07-01	60310982664.676605
1999-10-01	58496206377.592896
2000-01-01	60752889808.255196
2000-04-01	56304295570.524090
2000-07-01	54727511692.637700
2000-10-01	60630358325.541000
2001-01-01	62101535715.283000
2001-04-01	60310293311.417100
2001-07-01	58124683554.989900
2001-10-01	61333566181.891800
2002-01-01	68179875377.933105
2002-04-01	64723453371.748600
2002-07-01	65847918518.502910
2002-10-01	73372276835.005700
2003-01-01	85194512528.284290
2003-04-01	82135830049.131790
2003-07-01	82924396134.684800
2003-10-01	79065688391.416300
2004-01-01	101314605812.004000
2004-04-01	82830322647.821410
2004-07-01	85997269989.892600
2004-10-01	89122660889.553790
2005-01-01	119897987865.293000
2005-04-01	91001683736.427900
2005-07-01	98148996417.645310
2005-10-01	91211363387.545800
2006-01-01	110123194244.183000
2006-04-01	93699755779.240700
2006-07-01	100617510257.862000
2006-10-01	100184757863.885000
2007-01-01	125366838398.163010
2007-04-01	97895924610.249200
2007-07-01	106137136654.734000
2007-10-01	119741522940.829990
2008-01-01	153028593768.481000
2008-04-01	118815369510.003000
2008-07-01	115006580265.394990
2008-10-01	117716530733.114010
2009-01-01	133219599504.517010
2009-04-01	114611497578.045000
2009-07-01	112439692960.939010
2009-10-01	123034712743.429000
2010-01-01	142889365342.878020
2010-04-01	109001425426.660000
2010-07-01	120592943653.758990
2010-10-01	126376309639.709000
2011-01-01	150581571197.114000
2011-04-01	124575519262.511000
2011-07-01	128385636435.678000
2011-10-01	130175601378.768000
2012-01-01	155168754926.466000
2012-04-01	124175278451.299010
2012-07-01	124067851090.932000
2012-10-01	131592577739.417000
2013-01-01	166802711860.709000
2013-04-01	136387185562.267000
2013-07-01	139812115810.410980
2013-10-01	139243065434.007000
2014-01-01	177425373874.215000
2014-04-01	155054609649.816000
2014-07-01	140714540394.788000
2014-10-01	149890037145.575000
2015-01-01	167422152806.691000
2015-04-01	138598201467.212980
2015-07-01	136615109733.594000
2015-10-01	144128484742.505000
2016-01-01	163055528342.767000
2016-04-01	138124383123.134980
2016-07-01	149921120827.841000
2016-10-01	154362867520.767000
2017-01-01	160962387556.722020
2017-04-01	156335555268.914980
2017-07-01	159521091522.797000
2017-10-01	156449188265.879970
2018-01-01	173292074608.221000