Quarter	US Dollars, Sum Over Component Sub-periods
1997-01-01	180043610092.682
1997-04-01	183271364123.727
1997-07-01	173513824789.605
1997-10-01	192962700538.496
1998-01-01	188031813475.605
1998-04-01	188780490485.022
1998-07-01	183273160970.813
1998-10-01	202257612672.649
1999-01-01	191885055750.954
1999-04-01	190215936311.117
1999-07-01	195059773489.933
1999-10-01	220404774260.509
2000-01-01	222599466877.283
2000-04-01	221060889054.912
2000-07-01	216146940988.644
2000-10-01	235244623500.087
2001-01-01	231892664923.881
2001-04-01	215137040165.438
2001-07-01	204154755891.005
2001-10-01	210100316474.593
2002-01-01	202240956110.105
2002-04-01	219180614309.362
2002-07-01	221182739285.831
2002-10-01	241675726147.997
2003-01-01	256877079978.529
2003-04-01	263683313770.777
2003-07-01	250037522044.201
2003-10-01	290479533555.450
2004-01-01	301230153769.221
2004-04-01	309952995058.455
2004-07-01	316634740789.045
2004-10-01	364142665918.218
2005-01-01	350673568339.667
2005-04-01	366584445003.776
2005-07-01	362653658536.585
2005-10-01	389176974310.181
2006-01-01	409040497193.264
2006-04-01	434517994050.861
2006-07-01	434387560011.896
2006-10-01	467194083756.127
2007-01-01	471429507910.148
2007-04-01	486501752493.934
2007-07-01	503260311640.697
2007-10-01	565942617012.027
2008-01-01	597406612065.521
2008-04-01	638625878677.428
2008-07-01	626543536938.918
2008-10-01	505711846598.371
2009-01-01	416729259725.053
2009-04-01	413451202905.129
2009-07-01	449412101273.065
2009-10-01	493005660841.742
2010-01-01	483925738007.380
2010-04-01	489650980558.262
2010-07-01	513397665101.452
2010-10-01	564994344659.096
2011-01-01	597455680627.079
2011-04-01	633259930915.371
2011-07-01	623360945074.599
2011-10-01	603296954998.653
2012-01-01	600287200559.538
2012-04-01	581906390254.328
2012-07-01	561222106360.792
2012-10-01	578871777124.070