Quarter	Billions of US Dollars
1993-07-01	0.3965
1993-10-01	0.3745
1994-01-01	0.0832
1994-04-01	0.4818
1994-07-01	0.6209
1994-10-01	1.0218
1995-01-01	1.4770
1995-04-01	1.6286
1995-07-01	1.3409
1995-10-01	1.2290
1996-01-01	1.0394
1996-04-01	1.0585
1996-07-01	2.0492
1996-10-01	2.1528
1997-01-01	1.8650
1997-04-01	1.9884
1997-07-01	1.5046
1997-10-01	2.0080
1998-01-01	2.7190
1998-04-01	2.2443
1998-07-01	1.8229
1998-10-01	1.0176
1999-01-01	0.7475
1999-04-01	0.7026
1999-07-01	0.7837
1999-10-01	1.2953
2000-01-01	0.4724
2000-04-01	0.4744
2000-07-01	0.4736
2000-10-01	0.0100
2001-04-01	0.2500
2001-07-01	0.7066
2001-10-01	0.2694
2002-01-01	1.2526
2002-04-01	1.2661
2002-07-01	2.0159
2002-10-01	2.1749
2003-01-01	1.4252
2003-04-01	2.1909
2003-07-01	3.2032
2003-10-01	3.6474
2004-01-01	5.7380
2004-04-01	6.5361
2004-07-01	8.7292
2004-10-01	10.7226
2005-01-01	10.9148
2005-04-01	10.8835
2005-07-01	10.2396
2005-10-01	9.0981
2006-01-01	9.5444
2006-04-01	9.6992
2006-07-01	11.4232
2006-10-01	12.8481
2007-01-01	12.5828
2007-04-01	12.4333
2007-07-01	13.8122
2007-10-01	16.2289
2008-01-01	22.7658
2008-04-01	27.2325
2008-07-01	26.3612
2008-10-01	21.1253
2009-01-01	19.1777
2009-04-01	23.4045
2009-07-01	20.1218
2009-10-01	16.9560
2010-01-01	21.4457
2010-04-01	22.4040
2010-07-01	26.2372
2010-10-01	30.7273
2011-01-01	34.2053
2011-04-01	23.7682
2011-07-01	23.3058
2011-10-01	32.3824
2012-01-01	31.8519
2012-04-01	56.7827
2012-07-01	49.3370
2012-10-01	71.6747
2013-01-01	71.2432
2013-04-01	53.9107
2013-07-01	54.0127
2013-10-01	43.6389
2014-01-01	44.8991
2014-04-01	47.2485
2014-07-01	37.9257
2014-10-01	43.6470
2015-01-01	36.6205
2015-04-01	58.1412