Quarter	US Dollars, sum over component sub-periods
1991-01-01	96210940968.18450
1991-04-01	87668278545.33571
1991-07-01	84552869372.07300
1991-10-01	93649751781.43380
1992-01-01	94305459784.68950
1992-04-01	91398069466.64190
1992-07-01	95927151293.95700
1992-10-01	96542417578.35190
1993-01-01	79641671956.93840
1993-04-01	80795686620.11000
1993-07-01	76119860532.11990
1993-10-01	80717070392.82110
1994-01-01	78334156310.17290
1994-04-01	85428338146.14970
1994-07-01	89151692757.76720
1994-10-01	98835555402.95410
1995-01-01	102140823938.45900
1995-04-01	109608848431.45700
1995-07-01	102599142073.17099
1995-10-01	111015960273.90800
1996-01-01	106479194307.11601
1996-04-01	102686536776.39801
1996-07-01	101141603148.92299
1996-10-01	109057489728.84700
1997-01-01	100726915977.48500
1997-04-01	102658526612.57400
1997-07-01	97823949341.88700
1997-10-01	107069392965.81601
1998-01-01	104997251730.26200
1998-04-01	108474635280.24500
1998-07-01	104973747935.45500
1998-10-01	115158523498.73601
1999-01-01	108394645836.46800
1999-04-01	107700810953.79900
1999-07-01	107676165220.93000
1999-10-01	114774458515.98900
2000-01-01	112859127419.75900
2000-04-01	112039646239.94200
2000-07-01	111466642121.08400
2000-10-01	122166485139.33100
2001-01-01	116908928025.83800
2001-04-01	111978507552.80300
2001-07-01	107205835765.86400
2001-10-01	110011106991.23100
2002-01-01	97138420137.05380
2002-04-01	109959231408.06800
2002-07-01	112955941505.91101
2002-10-01	124594156801.62099
2003-01-01	130889363065.52100
2003-04-01	137543971033.53400
2003-07-01	131796426781.59200
2003-10-01	154162547595.44800
2004-01-01	155956191570.67900
2004-04-01	157425644874.26700
2004-07-01	162866725341.89600
2004-10-01	186980959008.58100
2005-01-01	171480095140.86100
2005-04-01	181745342397.98900
2005-07-01	177336161615.30402
2005-10-01	192979508020.34100
2006-01-01	195884664565.63000
2006-04-01	210065711403.87700
2006-07-01	214916315606.11900
2006-10-01	234036312573.21000
2007-01-01	233666970134.31400
2007-04-01	241284517832.41300
2007-07-01	247139374384.42800
2007-10-01	272179027057.32303
2008-01-01	281689967593.24100
2008-04-01	299771444331.48395
2008-07-01	295106478019.54100
2008-10-01	246237428989.91300
2009-01-01	210379968419.74503
2009-04-01	202342366791.17300
2009-07-01	223749741807.57300
2009-10-01	239987458900.79200
2010-01-01	236481867691.97300
2010-04-01	240548573503.16202
2010-07-01	249843665557.07898
2010-10-01	276437303957.51000
2011-01-01	290426038880.25100
2011-04-01	313326359076.60700
2011-07-01	306288917689.01700
2011-10-01	295940519275.24300
2012-01-01	289813936721.11300
2012-04-01	278192396327.63800
2012-07-01	269743055740.46000
2012-10-01	282317702219.17596
2013-01-01	282184496775.09200
2013-04-01	281569195381.80000
2013-07-01	289854334148.06903
2013-10-01	298456844329.49400
2014-01-01	302201800197.49396
2014-04-01	301536835633.78500
2014-07-01	293417584507.37500
2014-10-01	281231843781.95900
2015-01-01	256189030870.67700
2015-04-01	253492868829.03500
2015-07-01	256448585555.52200
2015-10-01	252293511490.09500
2016-01-01	248492635934.80100
2016-04-01	258480125011.70000
2016-07-01	255477810290.77103
2016-10-01	259402797754.97400
2017-01-01	266962544497.11700
2017-04-01	273952238714.18298
2017-07-01	290409243508.49800
2017-10-01	303565204580.38000
2018-01-01	320504800323.02704
2018-04-01	315297110429.29000