Quarter	Billions of US Dollars
1996-10-01	0.20000
1997-01-01	0.20000
1997-04-01	0.20000
1997-07-01	0.20000
1997-10-01	0.20000
1998-01-01	0.20000
1998-04-01	0.20000
1998-07-01	0.37828
1998-10-01	0.57873
1999-01-01	0.56859
1999-04-01	0.56431
1999-07-01	0.50499
1999-10-01	0.65040
2000-01-01	0.62877
2000-04-01	0.77696
2000-07-01	0.82903
2000-10-01	0.85546
2001-01-01	0.83230
2001-04-01	0.81507
2001-07-01	0.76524
2001-10-01	0.75252
2002-01-01	0.74896
2002-04-01	0.94759
2002-07-01	0.94988
2002-10-01	0.98633
2003-01-01	1.00874
2003-04-01	1.04005
2003-07-01	1.05135
2003-10-01	1.10812
2004-01-01	1.09149
2004-04-01	1.08959
2004-07-01	1.10195
2004-10-01	0.90684
2005-01-01	0.88237
2005-04-01	0.85174
2005-07-01	0.84816
2005-10-01	0.64503
2006-01-01	0.65668
2006-04-01	0.67662
2006-07-01	0.68037
2006-10-01	0.51792
2007-01-01	0.53355
2007-04-01	0.26594
2007-07-01	0.27974
2007-10-01	0.29209
2008-01-01	0.32357
2008-04-01	0.34707
2008-07-01	0.31641
2008-10-01	0.31237
2009-01-01	0.29509
2009-04-01	0.31340
2009-07-01	0.32469
2009-10-01	0.31943
2010-01-01	0.29888
2010-04-01	0.27209
2010-07-01	0.30262
2010-10-01	0.29628
2011-01-01	0.31502
2011-04-01	0.32047
2011-07-01	0.29941
2011-10-01	0.28690
2012-01-01	0.29615
2012-04-01	0.27916
2012-07-01	0.28670
2012-10-01	0.29256
2013-01-01	0.28393
2013-04-01	0.29003
2013-07-01	0.29945
2013-10-01	2.88843
2014-01-01	2.88781
2014-04-01	3.92353
2014-07-01	3.61472
2014-10-01	3.48775
2015-01-01	3.09074
2015-04-01	3.21426