Quarter	Billions of US Dollars
1998-01-01	0.20000
1998-04-01	0.20000
1999-10-01	0.06360
2000-01-01	0.06141
2000-04-01	0.20398
2000-07-01	0.19935
2000-10-01	0.13055
2001-01-01	0.12039
2001-10-01	0.22224
2002-01-01	0.22356
2002-04-01	1.05435
2002-07-01	1.14411
2002-10-01	0.92752
2003-01-01	0.94819
2003-04-01	0.66271
2003-07-01	0.58260
2003-10-01	0.94725
2004-01-01	0.61120
2004-04-01	0.91162
2004-07-01	0.93067
2004-10-01	1.02158
2005-01-01	0.97230
2009-04-01	0.70670
2009-07-01	0.73215
2009-10-01	0.72030
2010-01-01	0.67395
2013-04-01	1.30800
2013-07-01	1.35050
2013-10-01	1.37910
2014-01-01	4.13640
2014-04-01	2.73160
2014-07-01	2.51660
2014-10-01	1.72767
2015-01-01	1.34488
2015-04-01	1.60932