Quarter	Billions of US Dollars
1993-07-01	1.7331
1993-10-01	1.6513
1994-01-01	1.8162
1994-04-01	1.7695
1994-07-01	1.4428
1994-10-01	1.0523
1995-01-01	1.3166
1995-04-01	0.7161
1995-07-01	0.5731
1995-10-01	0.4889
1996-01-01	0.4311
1996-04-01	0.5047
1996-07-01	0.6162
1996-10-01	0.4167
1997-01-01	0.8185
1997-04-01	0.8074
1997-07-01	0.9834
1997-10-01	0.9705
1998-01-01	0.5015
1998-04-01	0.5849
1998-07-01	0.7695
1998-10-01	1.9691
1999-01-01	2.5439
1999-04-01	2.8933
1999-07-01	2.6776
1999-10-01	1.4297
2000-01-01	1.1245
2000-04-01	1.2499
2000-07-01	1.4160
2000-10-01	1.9661
2001-01-01	2.0172
2001-04-01	3.1604
2001-07-01	2.6326
2001-10-01	3.6050
2002-01-01	3.4761
2002-04-01	3.5314
2002-07-01	4.9664
2002-10-01	4.4196
2003-01-01	6.2229
2003-04-01	5.3724
2003-07-01	5.8113
2003-10-01	5.4620
2004-01-01	2.9545
2004-04-01	2.5977
2004-07-01	2.2293
2004-10-01	3.3029
2005-01-01	3.1419
2005-04-01	4.4751
2005-07-01	3.8316
2005-10-01	3.9362
2006-01-01	4.6900
2006-04-01	5.1063
2006-07-01	4.9464
2006-10-01	3.2947
2007-01-01	3.2960
2007-04-01	5.6363
2007-07-01	5.2214
2007-10-01	6.3364
2008-01-01	7.9431
2008-04-01	4.9140
2008-07-01	4.9892
2008-10-01	3.9218
2009-01-01	3.7163
2009-04-01	2.2894
2009-07-01	2.2118
2009-10-01	2.0666
2010-01-01	2.1117
2010-04-01	3.8914
2010-07-01	5.7992
2010-10-01	5.8602
2011-01-01	4.5149
2011-04-01	2.7322
2011-07-01	0.8652
2011-10-01	1.6889
2012-01-01	2.4766
2012-04-01	3.7265
2012-07-01	4.8382
2012-10-01	4.6628
2013-01-01	6.6468
2013-04-01	9.4921
2013-07-01	11.2963
2013-10-01	11.3708
2014-01-01	9.8980
2014-04-01	10.6436
2014-07-01	7.6040
2014-10-01	7.7748
2015-01-01	9.9070
2015-04-01	5.2453