Quarter	Billions of US Dollars
1990-10-01	198.072
1991-01-01	203.805
1991-04-01	215.061
1991-07-01	224.314
1991-10-01	244.364
1992-01-01	252.222
1992-04-01	258.051
1992-07-01	268.901
1992-10-01	279.218
1993-01-01	292.582
1993-04-01	303.490
1993-07-01	315.680
1993-10-01	329.026
1994-01-01	329.489
1994-04-01	353.583
1994-07-01	378.363
1994-10-01	276.584
1995-01-01	221.544
1995-04-01	262.022
1995-07-01	276.736
1995-10-01	244.828
1996-01-01	256.823
1996-04-01	260.314
1996-07-01	266.618
1996-10-01	260.789
1997-01-01	267.911
1997-04-01	272.541
1997-07-01	278.399
1997-10-01	271.433
1998-01-01	271.551
1998-04-01	271.909
1998-07-01	252.739
1998-10-01	263.942
1999-01-01	277.975
1999-04-01	287.738
1999-07-01	286.433
1999-10-01	287.213
2000-01-01	298.969
2000-04-01	292.980
2000-07-01	308.388
2000-10-01	308.128
2001-01-01	312.647
2001-04-01	322.890
2001-07-01	311.910
2001-10-01	327.280
2002-01-01	334.391
2002-04-01	314.324
2002-07-01	315.889
2002-10-01	319.586
2003-01-01	316.271
2003-04-01	331.888
2003-07-01	322.444
2003-10-01	323.003
2004-01-01	329.477
2004-04-01	324.310
2004-07-01	334.222
2004-10-01	347.937
2005-01-01	355.131
2005-04-01	374.201
2005-07-01	376.073
2005-10-01	390.484
2006-01-01	391.933
2006-04-01	399.081
2006-07-01	427.325
2006-10-01	446.504
2007-01-01	451.487
2007-04-01	472.364
2007-07-01	488.522
2007-10-01	513.031
2008-01-01	535.353
2008-04-01	562.739
2008-07-01	548.434
2008-10-01	482.138
2009-01-01	484.581
2009-04-01	519.977
2009-07-01	519.859
2009-10-01	534.258
2010-01-01	580.752
2010-04-01	578.389
2010-07-01	599.412
2010-10-01	612.141
2011-01-01	654.006
2011-04-01	677.687
2011-07-01	617.726
2011-10-01	625.798
2012-01-01	697.658
2012-04-01	679.787
2012-07-01	732.138
2012-10-01	731.207
2013-01-01	783.185
2013-04-01	768.255
2013-07-01	786.372
2013-10-01	819.259
2014-01-01	846.359
2014-04-01	875.932
2014-07-01	868.840
2014-10-01	822.580
2015-01-01	811.998
2015-04-01	815.313
2015-07-01	795.435
2015-10-01	800.336
2016-01-01	841.880
2016-04-01	797.243
2016-07-01	790.138
2016-10-01	779.297
2017-01-01	851.835
2017-04-01	888.533
2017-07-01	910.471
2017-10-01	866.337
2018-01-01	940.654