Quarter	Billions of US Dollars
1993-07-01	1.2689
1993-10-01	0.9416
1994-01-01	1.0620
1994-04-01	1.6786
1994-07-01	1.7875
1994-10-01	1.9008
1995-01-01	1.0985
1995-04-01	1.3582
1995-07-01	1.5741
1995-10-01	1.9368
1996-01-01	2.1419
1996-04-01	2.3461
1996-07-01	2.0652
1996-10-01	2.3394
1997-01-01	2.7669
1997-04-01	3.1169
1997-07-01	3.8838
1997-10-01	3.6465
1998-01-01	3.9740
1998-04-01	4.5574
1998-07-01	4.4666
1998-10-01	5.9439
1999-01-01	5.7401
1999-04-01	5.8998
1999-07-01	5.2038
1999-10-01	4.7826
2000-01-01	5.5170
2000-04-01	5.4881
2000-07-01	5.8747
2000-10-01	6.2271
2001-01-01	6.2546
2001-04-01	6.2772
2001-07-01	7.4476
2001-10-01	7.4049
2002-01-01	7.0710
2002-04-01	8.1602
2002-07-01	7.1433
2002-10-01	8.0197
2003-01-01	8.1927
2003-04-01	9.1292
2003-07-01	9.6155
2003-10-01	9.8918
2004-01-01	9.9749
2004-04-01	8.6012
2004-07-01	8.5171
2004-10-01	7.8989
2005-01-01	8.9361
2005-04-01	9.8275
2005-07-01	9.9162
2005-10-01	10.2675
2006-01-01	11.4033
2006-04-01	12.7232
2006-07-01	15.4866
2006-10-01	14.8327
2007-01-01	14.7344
2007-04-01	13.2355
2007-07-01	10.8575
2007-10-01	12.1401
2008-01-01	11.4658
2008-04-01	11.2596
2008-07-01	10.2368
2008-10-01	9.8176
2009-01-01	8.4497
2009-04-01	7.9664
2009-07-01	8.6678
2009-10-01	9.3202
2010-01-01	10.1343
2010-04-01	12.3702
2010-07-01	12.5061
2010-10-01	13.5079
2011-01-01	14.8284
2011-04-01	16.0355
2011-07-01	17.4995
2011-10-01	20.2209
2012-01-01	19.5853
2012-04-01	17.7959
2012-07-01	16.1620
2012-10-01	12.1407
2013-01-01	10.1916
2013-04-01	17.5122
2013-07-01	21.3199
2013-10-01	24.1180
2014-01-01	27.3070
2014-04-01	21.2256
2014-07-01	18.6769
2014-10-01	19.5215
2015-01-01	18.4639
2015-04-01	20.3036