Quarter	US Dollars, Sum Over Component Sub-periods
1997-01-01	55542865335.7816
1997-04-01	57851098095.2002
1997-07-01	64098562084.0139
1997-10-01	63533756296.1830
1998-01-01	59452833509.3386
1998-04-01	61864619408.0718
1998-07-01	71055997284.4844
1998-10-01	70949005492.4998
1999-01-01	64273366758.9613
1999-04-01	65885233197.1255
1999-07-01	72376258389.2617
1999-10-01	71333679294.2397
2000-01-01	66412281567.7757
2000-04-01	66414830033.6197
2000-07-01	71314275386.3301
2000-10-01	71888876007.1880
2001-01-01	69823466092.5726
2001-04-01	67464829755.6287
2001-07-01	75244703295.3971
2001-10-01	73010688481.5191
2002-01-01	66321372216.7027
2002-04-01	70666727974.9862
2002-07-01	79856051414.8933
2002-10-01	78872177943.7756
2003-01-01	79203435319.3774
2003-04-01	82538336299.2692
2003-07-01	91810063412.2547
2003-10-01	94375297477.3917
2004-01-01	95045630703.8380
2004-04-01	97577437628.0583
2004-07-01	107951581349.8530
2004-10-01	112802798048.2750
2005-01-01	107899357882.3220
2005-04-01	110382582431.4120
2005-07-01	121736585365.8540
2005-10-01	114983349191.2460
2006-01-01	112216118684.8440
2006-04-01	120333067996.1460
2006-07-01	133698007392.6160
2006-10-01	136230544328.8330
2007-01-01	133707280832.0950
2007-04-01	144927204098.1400
2007-07-01	163359761686.5260
2007-10-01	172305462976.3800
2008-01-01	167936476228.5260
2008-04-01	180015620932.0490
2008-07-01	184689093272.0180
2008-10-01	158686629892.3040
2009-01-01	143617242725.1830
2009-04-01	150930095324.5570
2009-07-01	167574023744.8150
2009-10-01	172201329067.1920
2010-01-01	154625922509.2250
2010-04-01	152303782455.8430
2010-07-01	164235557661.6550
2010-10-01	174710672759.3540
2011-01-01	165219432165.1550
2011-04-01	176335636154.2890
2011-07-01	187918294347.4370
2011-10-01	179151172190.7840
2012-01-01	159821210001.7490
2012-04-01	165853387475.9560
2012-07-01	172424608967.6750
2012-10-01	176963142412.1820