Quarter	Billions of US Dollars
1993-07-01	1.1573
1993-10-01	1.0465
1994-01-01	1.0195
1994-04-01	1.0720
1994-07-01	1.1431
1994-10-01	1.0662
1995-01-01	1.8685
1995-04-01	1.7238
1995-07-01	1.8361
1995-10-01	2.0710
1996-01-01	1.9962
1996-04-01	1.7763
1996-07-01	1.8138
1996-10-01	2.1456
1997-01-01	2.0100
1997-04-01	2.1980
1997-07-01	2.0748
1997-10-01	2.0878
1998-01-01	2.2390
1998-04-01	1.8100
1998-07-01	2.0018
1998-10-01	2.2227
1999-01-01	2.0344
1999-04-01	2.1013
1999-07-01	2.0877
1999-10-01	2.0233
2000-01-01	1.9154
2000-04-01	1.8921
2000-07-01	1.8528
2000-10-01	1.7827
2001-01-01	1.7899
2001-04-01	1.6901
2001-07-01	2.5656
2001-10-01	3.4947
2002-01-01	3.4652
2002-04-01	3.9022
2002-07-01	4.3201
2002-10-01	3.9938
2003-01-01	4.0936
2003-04-01	5.0071
2003-07-01	5.8775
2003-10-01	8.0578
2004-01-01	7.7614
2004-04-01	8.1981
2004-07-01	8.3390
2004-10-01	8.8943
2005-01-01	8.6027
2005-04-01	8.4023
2005-07-01	8.4665
2005-10-01	8.2136
2006-01-01	8.1414
2006-04-01	8.4803
2006-07-01	7.6387
2006-10-01	10.0555
2007-01-01	10.1800
2007-04-01	11.7464
2007-07-01	11.6611
2007-10-01	10.8572
2008-01-01	11.6769
2008-04-01	11.5597
2008-07-01	10.9352
2008-10-01	11.0335
2009-01-01	13.6732
2009-04-01	16.5487
2009-07-01	17.3330
2009-10-01	19.0013
2010-01-01	17.9184
2010-04-01	18.1676
2010-07-01	19.8465
2010-10-01	19.7462
2011-01-01	22.1112
2011-04-01	24.7752
2011-07-01	23.7446
2011-10-01	21.7590
2012-01-01	23.0079
2012-04-01	23.0003
2012-07-01	27.1583
2012-10-01	27.7862
2013-01-01	31.7116
2013-04-01	32.5126
2013-07-01	35.1136
2013-10-01	37.1883
2014-01-01	38.4488
2014-04-01	38.4749
2014-07-01	36.1408
2014-10-01	34.4182
2015-01-01	31.4904
2015-04-01	34.9431