Quarter	Billions of US Dollars
1993-07-01	0.7258
1993-10-01	0.6048
1994-01-01	0.6295
1994-04-01	0.6555
1994-07-01	0.6764
1994-10-01	0.7047
1995-01-01	1.1550
1995-04-01	1.1487
1995-07-01	1.2864
1995-10-01	1.3332
1996-01-01	1.2967
1996-04-01	2.3264
1996-07-01	2.6306
1996-10-01	2.7996
1997-01-01	2.6254
1997-04-01	2.5853
1997-07-01	2.6377
1997-10-01	2.7180
1998-01-01	2.6374
1998-04-01	2.7244
1998-07-01	2.7546
1998-10-01	2.7503
1999-01-01	2.6363
1999-04-01	2.5227
1999-07-01	2.5528
1999-10-01	2.4806
2000-01-01	2.5244
2000-04-01	2.4797
2000-07-01	2.3497
2000-10-01	2.3036
2001-01-01	2.2579
2001-04-01	2.7567
2001-07-01	3.1872
2001-10-01	3.1767
2002-01-01	3.0240
2002-04-01	3.6190
2002-07-01	3.7398
2002-10-01	3.5249
2003-01-01	3.5609
2003-04-01	3.4640
2003-07-01	3.6682
2003-10-01	4.7362
2004-01-01	4.6471
2004-04-01	5.9522
2004-07-01	5.9286
2004-10-01	6.2847
2005-01-01	6.3114
2005-04-01	5.3392
2005-07-01	5.3238
2005-10-01	5.2034
2006-01-01	6.0826
2006-04-01	5.3713
2006-07-01	4.9794
2006-10-01	5.2058
2007-01-01	5.2467
2007-04-01	5.3136
2007-07-01	5.5474
2007-10-01	5.7457
2008-01-01	5.9191
2008-04-01	7.9635
2008-07-01	7.4349
2008-10-01	6.7596
2009-01-01	8.2919
2009-04-01	17.0875
2009-07-01	18.5093
2009-10-01	19.6201
2010-01-01	19.8533
2010-04-01	19.1833
2010-07-01	23.0582
2010-10-01	24.0414
2011-01-01	28.5020
2011-04-01	29.7201
2011-07-01	27.9909
2011-10-01	27.3064
2012-01-01	31.6294
2012-04-01	30.9331
2012-07-01	32.4698
2012-10-01	33.7414
2013-01-01	35.5465
2013-04-01	34.9930
2013-07-01	36.1754
2013-10-01	37.7531
2014-01-01	38.6964
2014-04-01	35.9641
2014-07-01	35.8145
2014-10-01	34.5113
2015-01-01	34.1432
2015-04-01	37.3692