Quarter	Billions of US Dollars
1993-07-01	0.7424
1993-10-01	0.6187
1994-01-01	0.5802
1994-04-01	0.9015
1994-07-01	1.1000
1994-10-01	0.9570
1995-01-01	0.8410
1995-04-01	0.9266
1995-07-01	0.7786
1995-10-01	1.0344
1996-01-01	1.6820
1996-04-01	0.9012
1996-07-01	0.7580
1996-10-01	1.1813
1997-01-01	1.3779
1997-04-01	0.8215
1997-07-01	1.3421
1997-10-01	1.6110
1998-01-01	0.7951
1998-04-01	1.0252
1998-07-01	0.8995
1998-10-01	0.4518
1999-01-01	1.3729
1999-04-01	1.1244
1999-07-01	3.2224
1999-10-01	2.6182
2000-01-01	6.2314
2000-04-01	5.9574
2000-07-01	7.8244
2000-10-01	4.8952
2001-01-01	8.1316
2001-04-01	5.8193
2001-07-01	4.4415
2001-10-01	4.9174
2002-01-01	5.2128
2002-04-01	5.5595
2002-07-01	4.8325
2002-10-01	3.1854
2003-01-01	6.7074
2003-04-01	3.9337
2003-07-01	2.4503
2003-10-01	2.6228
2004-01-01	5.0316
2004-04-01	3.7845
2004-07-01	4.5585
2004-10-01	3.9734
2005-01-01	6.7580
2005-04-01	5.0120
2005-07-01	5.5784
2005-10-01	4.8159
2006-01-01	11.6245
2006-04-01	9.7257
2006-07-01	7.4371
2006-10-01	5.4468
2007-01-01	14.5212
2007-04-01	16.2367
2007-07-01	21.5685
2007-10-01	10.9363
2008-01-01	17.9064
2008-04-01	11.4988
2008-07-01	13.5626
2008-10-01	17.5375
2009-01-01	15.1507
2009-04-01	5.8921
2009-07-01	9.0690
2009-10-01	7.0326
2010-01-01	15.3386
2010-04-01	7.5686
2010-07-01	11.7145
2010-10-01	9.0200
2011-01-01	20.1451
2011-04-01	13.2364
2011-07-01	15.9321
2011-10-01	10.1207
2012-01-01	12.2795
2012-04-01	9.9499
2012-07-01	6.9547
2012-10-01	10.4730
2013-01-01	9.9798
2013-04-01	5.8174
2013-07-01	11.1322
2013-10-01	9.5274
2014-01-01	10.5746
2014-04-01	10.8904
2014-07-01	8.4722
2014-10-01	9.1065
2015-01-01	6.9213
2015-04-01	4.4563