Quarter	Billions of US Dollars
1994-01-01	0.1743
1999-04-01	0.2157
1999-07-01	1.1147
1999-10-01	0.0398
2000-01-01	1.0287
2000-04-01	0.6257
2000-07-01	0.2589
2000-10-01	0.9535
2001-01-01	1.8586
2001-04-01	0.1320
2001-07-01	1.6675
2001-10-01	3.3992
2002-01-01	2.4016
2002-04-01	2.1345
2002-07-01	3.0001
2002-10-01	3.2562
2003-01-01	4.5807
2003-04-01	5.8344
2003-07-01	1.4052
2003-10-01	2.9523
2004-01-01	5.8106
2004-04-01	0.9377
2004-07-01	1.4271
2004-10-01	4.6540
2005-01-01	5.5676
2005-04-01	9.0024
2005-07-01	2.5022
2005-10-01	8.2060
2006-01-01	12.6451
2006-04-01	5.5068
2006-07-01	5.4979
2006-10-01	0.7836
2007-01-01	7.0072
2007-04-01	4.6824
2007-07-01	0.6665
2007-10-01	1.0211
2008-01-01	-1.3183
2008-04-01	4.6450
2008-07-01	-1.0115
2008-10-01	-0.9790
2009-01-01	1.9344
2009-04-01	-0.7687
2009-07-01	-4.1602
2009-10-01	3.7790
2010-01-01	-3.4980
2010-04-01	-5.6508
2010-07-01	5.1983
2010-10-01	-1.5266
2011-01-01	-2.1469
2011-04-01	2.5409
2011-07-01	-4.7605
2011-10-01	-2.2973
2012-01-01	-14.5636
2012-04-01	0.8976
2012-07-01	1.0774
2012-10-01	0.9602
2013-01-01	-3.9896
2013-04-01	-2.8583
2013-07-01	-3.5926
2013-10-01	-0.8007
2014-01-01	-5.1046
2014-04-01	-1.9491
2014-07-01	1.3226
2014-10-01	2.6885
2015-01-01	-2.7602
2015-04-01	2.2342