Quarter	Billions of US Dollars
1992-10-01	124.30946494922
1993-01-01	132.91827874535
1993-04-01	134.56421855251
1993-07-01	137.68017668633
1993-10-01	146.09614028092
1994-01-01	151.57442612444
1994-04-01	158.69858424437
1994-07-01	164.72210713945
1994-10-01	169.48308296719
1995-01-01	169.46963117412
1995-04-01	175.17060988123
1995-07-01	174.13789834283
1995-10-01	178.66550323067
1996-01-01	179.36182116851
1996-04-01	184.53653371904
1996-07-01	187.41149633188
1996-10-01	197.27191318449
1997-01-01	202.22869503061
1997-04-01	209.24596677497
1997-07-01	213.57591330837
1997-10-01	221.96465318829
1998-01-01	226.65837801046
1998-04-01	231.74871803887
1998-07-01	240.27386283020
1998-10-01	244.64402746194
1999-01-01	244.95423872861
1999-04-01	245.91124351792
1999-07-01	245.27659831530
1999-10-01	247.28739083953
2000-01-01	244.00523998847
2000-04-01	242.59525490914
2000-07-01	242.05261748827
2000-10-01	244.20042872854
2001-01-01	238.22858326442
2001-04-01	246.63298320437
2001-07-01	249.41430850596
2001-10-01	244.59048973460
2002-01-01	168.60253625478
2002-04-01	168.58226243523
2002-07-01	184.59406958722
2002-10-01	207.60965481481
2003-01-01	211.38220569514
2003-04-01	224.72064130900
2003-07-01	241.53606178270
2003-10-01	229.55317480198
2004-01-01	230.31052356386
2004-04-01	231.61583026440
2004-07-01	232.50148298866
2004-10-01	242.24532600141
2005-01-01	239.80730080383
2005-04-01	177.52206063336
2005-07-01	175.92168381215
2005-10-01	231.02590335513
2006-01-01	231.85885072690
2006-04-01	236.41074240611
2006-07-01	236.73348555230
2006-10-01	248.31084628642
2007-01-01	248.44878945506
2007-04-01	255.03421952407
2007-07-01	254.41654274385
2007-10-01	267.88902836068
2008-01-01	269.61144756815
2008-04-01	281.38505509105
2008-07-01	278.10124020268
2008-10-01	266.59390904610
2009-01-01	250.85045095768
2009-04-01	256.70994901194
2009-07-01	256.37518718789
2009-10-01	264.70676716614
2010-01-01	272.07990978570
2010-04-01	281.35722636132
2010-07-01	290.05282391825
2010-10-01	281.19974448918
2011-01-01	295.10321635838
2011-04-01	304.39992909357
2011-07-01	308.19783505768
2011-10-01	309.82497255084
2012-01-01	315.03064805492
2012-04-01	323.92406085001
2012-07-01	325.68783108079
2012-10-01	335.78230430097
2013-01-01	332.95890767068
2013-04-01	335.92928658060
2013-07-01	340.87329365559
2013-10-01	341.00476229923
2014-01-01	308.73624810076
2014-04-01	322.51582295433
2014-07-01	323.96426382502
2014-10-01	349.05955534297
2015-01-01	345.44956691475
2015-04-01	356.97067257962
2015-07-01	375.63019787776
2015-10-01	341.14253790483
2016-01-01	364.06787610752
2016-04-01	377.72722773137
2016-07-01	388.85532097037
2016-10-01	380.26487683616
2017-01-01	398.55438066336
2017-04-01	414.28257546998
2017-07-01	426.86175560690
2017-10-01	448.06864868463
2018-01-01	450.88684827141