Quarter	Billions of US Dollars
1993-07-01	0.3377
1993-10-01	0.4358
1994-01-01	0.5544
1994-04-01	0.4401
1994-07-01	0.8590
1994-10-01	0.8408
1995-01-01	0.3446
1995-04-01	0.3273
1995-07-01	0.3789
1995-10-01	0.5115
1996-01-01	0.4299
1996-04-01	0.6219
1996-07-01	0.3054
1996-10-01	0.8313
1997-01-01	0.9327
1997-04-01	0.9361
1997-07-01	0.9594
1997-10-01	1.2399
1998-01-01	1.2573
1998-04-01	2.1914
1998-07-01	2.7162
1998-10-01	2.6054
1999-01-01	3.0720
1999-04-01	2.3081
1999-07-01	3.1861
1999-10-01	3.0844
2000-01-01	2.6428
2000-04-01	2.5709
2000-07-01	2.2640
2000-10-01	1.6116
2001-01-01	1.7836
2001-04-01	2.2479
2001-07-01	1.7901
2001-10-01	2.1187
2002-01-01	3.4424
2002-04-01	3.4260
2002-07-01	3.6690
2002-10-01	4.3150
2003-01-01	3.8985
2003-04-01	4.1254
2003-07-01	3.7746
2003-10-01	3.6844
2004-01-01	4.0792
2004-04-01	4.1739
2004-07-01	5.1280
2004-10-01	6.8246
2005-01-01	8.5042
2005-04-01	9.2155
2005-07-01	8.7191
2005-10-01	7.3305
2006-01-01	9.8748
2006-04-01	10.9948
2006-07-01	8.2107
2006-10-01	11.9705
2007-01-01	19.0569
2007-04-01	19.6839
2007-07-01	17.1039
2007-10-01	16.8177
2008-01-01	12.7281
2008-04-01	13.6458
2008-07-01	17.3545
2008-10-01	14.3296
2009-01-01	8.8939
2009-04-01	10.2086
2009-07-01	13.6105
2009-10-01	16.9316
2010-01-01	17.1093
2010-04-01	15.4190
2010-07-01	15.3176
2010-10-01	13.8381
2011-01-01	11.4796
2011-04-01	10.1646
2011-07-01	9.6540
2011-10-01	9.5703
2012-01-01	8.7021
2012-04-01	9.8118
2012-07-01	10.0950
2012-10-01	10.9500
2013-01-01	11.6507
2013-04-01	10.9750
2013-07-01	10.2565
2013-10-01	7.7187
2014-01-01	6.0204
2014-04-01	6.3957
2014-07-01	5.7789
2014-10-01	7.0060
2015-01-01	4.8124
2015-04-01	2.5428