Quarter	Billions of US Dollars
1994-07-01	0.25394
1994-10-01	0.25065
1995-01-01	0.27980
1995-04-01	0.29551
1995-07-01	0.25432
1995-10-01	0.24312
1996-01-01	0.23523
1996-04-01	0.22848
1996-07-01	0.22529
1996-10-01	0.21552
1997-01-01	0.20153
1997-04-01	0.21853
1997-07-01	0.20661
1997-10-01	0.19238
1998-01-01	0.18932
1998-04-01	0.17749
1998-07-01	0.18484
1998-10-01	0.21626
1999-01-01	0.20764
1999-04-01	0.20644
1999-07-01	0.12798
1999-10-01	0.12055
2000-01-01	0.28181
2000-04-01	0.28190
2000-07-01	0.10997
2000-10-01	0.11675
2001-01-01	0.11081
2001-04-01	0.10640
2001-07-01	0.11457
2001-10-01	0.11058
2002-01-01	0.10946
2002-04-01	0.12516
2002-07-01	0.12371
2002-10-01	0.13158
2003-01-01	0.13670
2003-04-01	0.14337
2003-07-01	0.14619
2003-10-01	0.15846
2004-01-01	0.14669
2004-04-01	0.38896
2004-07-01	0.39709
2004-10-01	0.43587
2005-01-01	0.41485
2005-04-01	0.38694
2005-07-01	0.38534
2005-10-01	0.37750
2006-01-01	0.38733
2006-04-01	0.40682
2006-07-01	0.25320
2006-10-01	0.26340
2007-01-01	0.26636
2007-04-01	0.27010
2007-07-01	0.28358
2007-10-01	0.29442
2008-01-01	0.31624
2008-04-01	0.31528
2008-07-01	0.28606
2008-10-01	0.27834
2009-01-01	0.26616
2009-04-01	0.28268
2009-07-01	0.29286
2009-10-01	0.28812
2010-01-01	0.26958
2010-04-01	0.24542
2010-07-01	0.27296
2010-10-01	0.26724
2011-01-01	0.28414
2013-07-01	1.01288
2013-10-01	1.03432
2014-01-01	1.03410
2014-04-01	1.02435
2014-07-01	0.94373
2014-10-01	0.91058
2015-01-01	1.34488
2015-04-01	1.39862