Quarter	Billions of US Dollars
1993-07-01	1.3415
1993-10-01	1.2408
1994-01-01	1.3607
1994-04-01	1.5760
1994-07-01	1.7839
1994-10-01	2.3288
1995-01-01	3.6360
1995-04-01	5.3270
1995-07-01	5.9399
1995-10-01	6.0886
1996-01-01	4.9733
1996-04-01	5.0856
1996-07-01	5.2367
1996-10-01	8.3621
1997-01-01	7.6987
1997-04-01	8.6400
1997-07-01	8.6010
1997-10-01	7.8585
1998-01-01	8.8142
1998-04-01	10.0415
1998-07-01	10.8008
1998-10-01	11.8582
1999-01-01	10.8805
1999-04-01	10.1575
1999-07-01	10.1253
1999-10-01	9.4560
2000-01-01	9.9349
2000-04-01	8.9798
2000-07-01	11.0071
2000-10-01	11.2407
2001-01-01	11.2677
2001-04-01	12.2580
2001-07-01	10.2596
2001-10-01	11.0421
2002-01-01	8.9273
2002-04-01	7.9003
2002-07-01	6.0834
2002-10-01	5.5481
2003-01-01	4.8462
2003-04-01	5.4439
2003-07-01	6.5399
2003-10-01	7.2398
2004-01-01	7.5130
2004-04-01	6.7830
2004-07-01	6.9205
2004-10-01	8.8625
2005-01-01	10.0111
2005-04-01	10.4091
2005-07-01	9.4356
2005-10-01	8.8912
2006-01-01	10.5199
2006-04-01	11.8177
2006-07-01	13.7090
2006-10-01	16.2674
2007-01-01	15.8642
2007-04-01	16.7063
2007-07-01	18.8095
2007-10-01	18.5538
2008-01-01	20.9938
2008-04-01	24.9010
2008-07-01	26.2354
2008-10-01	22.6901
2009-01-01	23.9675
2009-04-01	25.2816
2009-07-01	26.7503
2009-10-01	26.0952
2010-01-01	23.1569
2010-04-01	23.0472
2010-07-01	24.4441
2010-10-01	23.1736
2011-01-01	28.7043
2011-04-01	34.6825
2011-07-01	31.8975
2011-10-01	37.7476
2012-01-01	34.2394
2012-04-01	27.3508
2012-07-01	30.4065
2012-10-01	22.2988
2013-01-01	25.9510
2013-04-01	30.0477
2013-07-01	36.2771
2013-10-01	38.1271
2014-01-01	40.6620
2014-04-01	37.0592
2014-07-01	36.9752
2014-10-01	46.0537
2015-01-01	50.0640
2015-04-01	51.8014