Quarter	Billions of US Dollars
1994-01-01	0.04789
1994-04-01	0.12886
1994-07-01	0.15100
1994-10-01	0.20125
1995-01-01	0.20309
1995-04-01	0.21119
1995-07-01	0.20549
1995-10-01	0.20268
1996-01-01	0.19574
1996-04-01	0.16785
1996-07-01	0.16698
1996-10-01	0.11507
1997-01-01	0.11739
1997-04-01	0.06387
1997-07-01	0.03424
1997-10-01	0.02810
1998-01-01	0.02998
2004-10-01	0.23684
2005-01-01	0.23684
2005-04-01	0.43684
2005-07-01	0.44041
2005-10-01	0.43915
2006-01-01	0.45035
2006-04-01	0.73293
2006-07-01	0.75546
2006-10-01	0.78819
2007-01-01	1.12370
2007-04-01	1.45809
2007-07-01	1.58877
2007-10-01	1.67747
2008-01-01	2.87830
2008-04-01	3.71693
2008-07-01	3.60759
2008-10-01	3.59765
2009-01-01	3.47744
2009-04-01	3.96941
2009-07-01	4.14656
2009-10-01	4.09031
2010-01-01	4.21701
2010-04-01	4.13423
2010-07-01	5.54081
2010-10-01	5.84377
2011-01-01	6.15330
2011-04-01	6.03187
2011-07-01	5.83227
2011-10-01	5.89259
2012-01-01	6.96733
2012-04-01	6.53848
2012-07-01	6.73343
2012-10-01	7.15800
2013-01-01	6.82887
2013-04-01	6.04798
2013-07-01	5.38250
2013-10-01	4.94698
2014-01-01	4.96665
2014-04-01	4.96293
2014-07-01	4.77411
2014-10-01	4.32003
2015-01-01	4.05987
2015-04-01	3.77659