Quarter	Billions of US Dollars
1993-07-01	0.85034
1993-10-01	1.02120
1994-01-01	1.18900
1994-04-01	0.84210
1994-07-01	0.91494
1994-10-01	0.82133
1995-01-01	1.12464
1995-04-01	0.96704
1995-07-01	0.61417
1995-10-01	0.90813
1996-01-01	0.81037
1996-04-01	2.21173
1996-07-01	1.35458
1996-10-01	1.43612
1997-01-01	1.97312
1997-04-01	2.34597
1997-07-01	1.47900
1997-10-01	3.16646
1998-01-01	2.33662
1998-04-01	1.72170
1998-07-01	2.70849
1998-10-01	2.51425
1999-01-01	2.71453
1999-04-01	4.22037
1999-07-01	2.11194
1999-10-01	1.59001
2000-01-01	2.14807
2000-04-01	1.72142
2000-07-01	1.84340
2000-10-01	1.92230
2001-01-01	1.25999
2001-04-01	1.60533
2001-07-01	1.51668
2001-10-01	1.14811
2002-01-01	1.57792
2002-04-01	1.17669
2002-07-01	1.28190
2002-10-01	2.48099
2003-01-01	2.21554
2003-04-01	1.64950
2003-07-01	1.06666
2003-10-01	2.17592
2004-01-01	1.46184
2004-04-01	1.27456
2004-07-01	1.66250
2004-10-01	1.52663
2005-01-01	1.31548
2005-04-01	1.57625
2005-07-01	0.90979
2005-10-01	1.11133
2006-01-01	0.47309
2006-04-01	1.25235
2006-07-01	1.12782
2006-10-01	0.94657
2007-01-01	1.12255
2007-04-01	1.80930
2007-07-01	1.17297
2007-10-01	1.13034
2008-01-01	1.07033
2008-04-01	0.65171
2008-07-01	1.35027
2008-10-01	2.12790
2009-01-01	1.70316
2009-04-01	1.74495
2009-07-01	2.24289
2009-10-01	1.25839
2010-01-01	0.97355
2010-04-01	0.93627
2010-07-01	0.81970
2010-10-01	0.74982
2011-01-01	0.72039
2011-04-01	1.48279
2011-07-01	1.49636
2011-10-01	1.14408
2012-01-01	0.98752
2012-04-01	2.89708
2012-07-01	1.17287
2012-10-01	2.34323
2013-01-01	1.23350
2013-04-01	1.20039
2013-07-01	1.10471
2013-10-01	2.01243
2014-01-01	3.80604
2014-04-01	4.07017
2014-07-01	3.65659
2014-10-01	2.05391
2015-01-01	2.47420
2015-04-01	2.38718