Quarter	US Dollars, monthly level
2006-01-01	2172512560276.8198
2006-04-01	2353293551293.8403
2006-07-01	2364347294009.7900
2006-10-01	2518336514386.0000
2007-01-01	2485806629596.1700
2007-04-01	2667060066309.4500
2007-07-01	2733060014753.0500
2007-10-01	3008834571316.1700
2008-01-01	3049376179128.5400
2008-04-01	3363475033659.1500
2008-07-01	3303553152778.0400
2008-10-01	2691072955442.9600
2009-01-01	2128480222046.7800
2009-04-01	2279000715633.8100
2009-07-01	2496268893272.2600
2009-10-01	2756765617908.6300
2010-01-01	2665245762216.7300
2010-04-01	2846961776665.3200
2010-07-01	2935270933993.2800
2010-10-01	3230217691953.5400
2011-01-01	3255477453224.8600
2011-04-01	3538264039061.5903
2011-07-01	3563623562385.8203
2011-10-01	3531833374111.0900
2012-01-01	3398637144345.7000
2012-04-01	3490891418709.9097
2012-07-01	3396051421133.2200
2012-10-01	3533344838862.3003
2013-01-01	3426475064756.5703
2013-04-01	3544601241391.0200
2013-07-01	3525220654760.9200
2013-10-01	3694139642649.5500
2014-01-01	3492357337754.2300
2014-04-01	3659818019174.1700
2014-07-01	3639604994514.0100
2014-10-01	3586214519004.3800
2015-01-01	3122853799000.1400
2015-04-01	3239220806994.7500
2015-07-01	3176007740880.9800
2015-10-01	3204169927360.2600
2016-01-01	2900092094138.7700
2016-04-01	3148940101070.1300
2016-07-01	3103687854142.5400
2016-10-01	3244307483342.5600
2017-01-01	3178556917461.1400
2017-04-01	3352708801719.6304
2017-07-01	3435123495009.3600
2017-10-01	3657973975987.7500
2018-01-01	3632482426910.3300