Quarter	Billions of US Dollars
1994-04-01	0.12300
1994-10-01	0.07131
1995-01-01	0.06832
1995-04-01	0.07151
1995-07-01	0.08013
1995-10-01	0.07524
1996-01-01	0.07280
1996-04-01	0.08254
1996-07-01	0.08750
1996-10-01	0.13243
1997-01-01	0.06297
1997-04-01	0.17275
1997-07-01	0.27791
1997-10-01	0.21983
1998-01-01	0.25736
1998-04-01	0.62254
1998-07-01	0.68524
1998-10-01	0.60649
1999-01-01	1.14292
1999-04-01	0.92596
1999-07-01	1.51388
1999-10-01	0.46136
2000-01-01	0.84334
2000-04-01	0.94673
2000-07-01	0.78293
2000-10-01	0.88524
2001-01-01	1.33342
2001-04-01	0.77179
2001-07-01	0.74481
2001-10-01	0.83519
2002-01-01	0.85174
2002-04-01	0.75545
2002-07-01	1.12683
2002-10-01	0.92455
2003-01-01	0.83575
2003-04-01	0.98865
2003-07-01	1.04320
2003-10-01	0.68831
2004-01-01	0.47733
2004-04-01	0.61066
2004-07-01	0.96417
2004-10-01	0.65131
2005-01-01	0.49453
2005-04-01	0.56000
2005-07-01	1.04312
2005-10-01	0.67345
2006-01-01	0.78072
2006-04-01	0.70705
2006-07-01	0.62163
2006-10-01	0.49759
2007-01-01	1.00416
2007-04-01	0.81183
2007-07-01	0.49154
2007-10-01	1.12769
2008-01-01	0.74932
2008-04-01	0.94180
2008-07-01	0.73863
2008-10-01	0.52354
2009-01-01	0.33196
2009-04-01	0.40943
2009-07-01	0.33467
2009-10-01	0.15320
2010-01-01	0.49299
2010-04-01	0.22570
2010-07-01	0.22871
2010-10-01	0.21225
2011-01-01	0.18064
2011-04-01	0.17139
2011-07-01	0.16808
2011-10-01	0.15790
2012-01-01	0.21096
2012-04-01	0.23923
2012-07-01	0.15386
2012-10-01	0.14918
2013-01-01	0.42245
2013-04-01	0.19989
2013-07-01	0.32053
2013-10-01	0.22368
2014-01-01	0.39003
2014-04-01	0.31351
2014-07-01	0.24930
2014-10-01	0.30851
2015-01-01	0.36907
2015-04-01	0.15757