Quarter	US Dollars, sum over component sub-periods
1990-01-01	5288507839.5678005
1990-04-01	5585727739.2323800
1990-07-01	6028084767.0046690
1990-10-01	6534738859.6070900
1991-01-01	6905630283.3749800
1991-04-01	4920523821.7421100
1991-07-01	5449780642.1555300
1991-10-01	3810892275.1922503
1992-01-01	4737731698.8461690
1992-04-01	5928659714.1753600
1992-07-01	6080880648.8991900
1992-10-01	6183265756.5181690
1993-01-01	6439421467.8460410
1993-04-01	5810650434.5162910
1993-07-01	5780022774.6357700
1993-10-01	6078295466.2942200
1994-01-01	6563923792.9965000
1994-04-01	6765149663.6950000
1994-07-01	7493096245.1797990
1994-10-01	8850448122.5438600
1995-01-01	9415773887.8687100
1995-04-01	9240893657.0672510
1995-07-01	9407107288.7374100
1995-10-01	9893538107.0427400
1996-01-01	10940927415.2781000
1996-04-01	11270945483.1640990
1996-07-01	10576641596.5668010
1996-10-01	11000437896.3627010
1997-01-01	11475335769.1759990
1997-04-01	11618990569.6430000
1997-07-01	10592970792.3021000
1997-10-01	12042785472.9311000
1998-01-01	12091845286.1390000
1998-04-01	11309712544.6119000
1998-07-01	10911007440.8599000
1998-10-01	10515397141.7442020
1999-01-01	10095822274.1147000
1999-04-01	11088980055.2295000
1999-07-01	11771368040.6087000
1999-10-01	12600038807.1906000
2000-01-01	14457509418.6894000
2000-04-01	12653000293.2720000
2000-07-01	13728320816.8559990
2000-10-01	13048375394.9002000
2001-01-01	12748895882.2057000
2001-04-01	13082490450.2946990
2001-07-01	12906599722.9029000
2001-10-01	12474284383.1285000
2002-01-01	12248336639.4165000
2002-04-01	12792185435.5044000
2002-07-01	14402485194.4135000
2002-10-01	15259272480.7523000
2003-01-01	15613117930.4172000
2003-04-01	16823168682.7480980
2003-07-01	16737643628.6266000
2003-10-01	18907250708.8068000
2004-01-01	19655211280.0566000
2004-04-01	20715167642.1259000
2004-07-01	25740199136.9001000
2004-10-01	29428478440.8910030
2005-01-01	31352627420.5947000
2005-04-01	34213113764.0782050
2005-07-01	34604312320.5234000
2005-10-01	34521953862.9635000
2006-01-01	38148902196.5078000
2006-04-01	41983901768.5329060
2006-07-01	43872654486.0123100
2006-10-01	42566404403.2977100
2007-01-01	43314394854.0864000
2007-04-01	50738509593.9313050
2007-07-01	53947617563.1359000
2007-10-01	60610377971.2858050
2008-01-01	74083644728.3832000
2008-04-01	82655104203.0094000
2008-07-01	92751804682.3904000
2008-10-01	74425964825.4568000
2009-01-01	58686034893.3456950
2009-04-01	65447000006.1488950
2009-07-01	72993999997.1736900
2009-10-01	78099999996.2385100
2010-01-01	84104000001.4516000
2010-04-01	88035797994.3293000
2010-07-01	89833078999.7311000
2010-10-01	98173185845.6393900
2011-01-01	107442187345.3850000
2011-04-01	123654293646.1370000
2011-07-01	124085174576.4290000
2011-10-01	120122392043.6060000
2012-01-01	131686202346.1769900
2012-04-01	118856721094.5210000
2012-07-01	120366048529.4890000
2012-10-01	132613339632.8040200
2013-01-01	130407541882.8010000
2013-04-01	124392970102.0000000
2013-07-01	114548360272.3400000
2013-10-01	112946559439.2750100
2014-01-01	114328383120.0360000
2014-04-01	116624415974.9110000
2014-07-01	122745143046.3420000
2014-10-01	118736322851.8540000
2015-01-01	103378554267.1350000
2015-04-01	102199970735.4169900
2015-07-01	104745676504.7340100
2015-10-01	98912777009.8886000
2016-01-01	90585627388.8572100
2016-04-01	90453440099.7542000
2016-07-01	93022738971.7224000
2016-10-01	102028447804.4080000
2017-01-01	107075837217.2020000
2017-04-01	115065606730.3360000
2017-07-01	108536409523.3660000
2017-10-01	121563530413.1160000
2018-01-01	123840710939.7680000
2018-04-01	129137318700.9830000