Quarter	Billions of US Dollars
1993-07-01	0.4305
1993-10-01	0.3532
1994-01-01	0.4819
1994-04-01	0.5687
1994-07-01	0.3151
1994-10-01	0.3263
1995-01-01	0.3508
1995-04-01	1.0465
1995-07-01	1.6649
1995-10-01	1.6152
1996-01-01	2.1425
1996-04-01	2.5241
1996-07-01	4.0657
1996-10-01	4.2785
1997-01-01	3.6597
1997-04-01	2.9380
1997-07-01	2.3674
1997-10-01	0.5281
1998-01-01	0.4707
1998-04-01	1.3353
1998-07-01	0.3166
1998-10-01	0.3188
1999-01-01	0.8818
1999-04-01	0.5107
1999-07-01	0.4379
1999-10-01	0.3545
2000-01-01	0.7148
2000-04-01	1.3598
2000-07-01	1.1124
2000-10-01	0.6280
2001-01-01	0.2286
2001-04-01	1.0798
2001-07-01	0.5629
2001-10-01	0.3146
2002-01-01	0.3201
2002-04-01	1.0141
2002-07-01	1.5673
2002-10-01	1.1250
2003-01-01	1.6186
2003-04-01	1.0841
2003-07-01	1.7114
2003-10-01	0.9687
2004-01-01	1.6796
2004-04-01	1.3020
2004-07-01	1.8770
2004-10-01	2.2668
2005-01-01	2.3612
2005-04-01	2.7544
2005-07-01	1.5698
2005-10-01	1.5799
2006-01-01	2.3254
2006-04-01	2.7351
2006-07-01	2.6607
2006-10-01	2.3224
2007-01-01	3.4301
2007-04-01	3.1182
2007-07-01	4.4619
2007-10-01	3.7530
2008-01-01	4.5915
2008-04-01	5.6286
2008-07-01	6.7380
2008-10-01	0.7318
2009-01-01	2.8969
2009-04-01	3.8384
2009-07-01	3.4432
2009-10-01	3.0323
2010-01-01	4.1630
2010-04-01	4.6460
2010-07-01	3.8014
2010-10-01	2.4731
2011-01-01	4.5573
2011-04-01	6.8953
2011-07-01	6.7282
2011-10-01	9.8464
2012-01-01	19.4010
2012-04-01	13.3331
2012-07-01	11.8558
2012-10-01	15.5958
2013-01-01	22.4696
2013-04-01	19.8251
2013-07-01	24.4802
2013-10-01	29.5888
2014-01-01	42.6995
2014-04-01	43.5068
2014-07-01	41.7832
2014-10-01	31.2318
2015-01-01	42.2332
2015-04-01	32.5467