Quarter	Billions of US Dollars
1993-07-01	1.9444
1993-10-01	1.9206
1994-01-01	2.1587
1994-04-01	2.2070
1994-07-01	2.2158
1994-10-01	1.4159
1995-01-01	2.2052
1995-04-01	2.2298
1995-07-01	1.9435
1995-10-01	1.6016
1996-01-01	1.6540
1996-04-01	1.3292
1996-07-01	0.7787
1996-10-01	0.8911
1997-01-01	2.6501
1997-04-01	2.8138
1997-07-01	2.3449
1997-10-01	1.3225
1998-01-01	2.7374
1998-04-01	3.1742
1998-07-01	3.8999
1998-10-01	3.1360
1999-01-01	3.6916
1999-04-01	3.4151
1999-07-01	5.0164
1999-10-01	3.1535
2000-01-01	4.6303
2000-04-01	5.8347
2000-07-01	5.3192
2000-10-01	5.0832
2001-01-01	6.5119
2001-04-01	5.3797
2001-07-01	5.7208
2001-10-01	5.9800
2002-01-01	5.5687
2002-04-01	8.3370
2002-07-01	7.3112
2002-10-01	6.9109
2003-01-01	8.1803
2003-04-01	7.1850
2003-07-01	7.5353
2003-10-01	8.7964
2004-01-01	8.5476
2004-04-01	8.5555
2004-07-01	8.4355
2004-10-01	11.8748
2005-01-01	10.1184
2005-04-01	11.3052
2005-07-01	10.1402
2005-10-01	10.7678
2006-01-01	13.0351
2006-04-01	15.4687
2006-07-01	16.7086
2006-10-01	17.0541
2007-01-01	20.2426
2007-04-01	19.9336
2007-07-01	21.8572
2007-10-01	27.7609
2008-01-01	35.1526
2008-04-01	31.9712
2008-07-01	30.2185
2008-10-01	33.3523
2009-01-01	34.0968
2009-04-01	32.0649
2009-07-01	35.3942
2009-10-01	30.5783
2010-01-01	29.6185
2010-04-01	32.6118
2010-07-01	30.3496
2010-10-01	31.1717
2011-01-01	36.7920
2011-04-01	33.1994
2011-07-01	32.9787
2011-10-01	31.9110
2012-01-01	39.5842
2012-04-01	42.5371
2012-07-01	43.9465
2012-10-01	40.4911
2013-01-01	33.5213
2013-04-01	31.9892
2013-07-01	32.2971
2013-10-01	36.9256
2014-01-01	35.2067
2014-04-01	37.1268
2014-07-01	38.0014
2014-10-01	33.7894
2015-01-01	38.2315
2015-04-01	31.0264