Quarter	Billions of US Dollars
1993-07-01	0.5951
1993-10-01	0.9470
1994-01-01	0.9847
1994-04-01	1.7398
1994-07-01	1.8429
1994-10-01	2.5963
1995-01-01	2.6546
1995-04-01	2.6860
1995-07-01	4.1536
1995-10-01	4.4812
1996-01-01	4.7298
1996-04-01	4.9174
1996-07-01	4.9532
1996-10-01	6.9751
1997-01-01	7.2411
1997-04-01	8.2119
1997-07-01	8.6595
1997-10-01	8.9047
1998-01-01	8.8363
1998-04-01	8.7653
1998-07-01	8.7094
1998-10-01	8.8980
1999-01-01	9.2698
1999-04-01	9.1522
1999-07-01	9.9925
1999-10-01	9.9321
2000-01-01	9.8693
2000-04-01	10.0202
2000-07-01	9.9765
2000-10-01	9.9222
2001-01-01	9.7811
2001-04-01	10.2223
2001-07-01	10.2971
2001-10-01	9.9453
2002-01-01	10.0492
2002-04-01	10.2229
2002-07-01	9.7457
2002-10-01	9.5964
2003-01-01	9.4996
2003-04-01	9.4491
2003-07-01	8.7022
2003-10-01	8.2222
2004-01-01	7.9243
2004-04-01	7.2091
2004-07-01	7.5421
2004-10-01	7.3175
2005-01-01	7.0728
2005-04-01	7.0553
2005-07-01	6.4654
2005-10-01	6.4408
2006-01-01	6.3478
2006-04-01	6.2386
2006-07-01	6.2273
2006-10-01	5.4235
2007-01-01	5.3155
2007-04-01	4.9992
2007-07-01	5.0366
2007-10-01	5.2228
2008-01-01	5.2889
2008-04-01	5.2730
2008-07-01	5.2477
2008-10-01	5.2921
2009-01-01	5.0604
2009-04-01	5.0898
2009-07-01	4.7148
2009-10-01	4.7158
2010-01-01	4.7193
2010-04-01	4.7149
2010-07-01	4.7643
2010-10-01	4.7813
2011-01-01	4.7908
2011-04-01	4.2113
2011-07-01	4.1840
2011-10-01	4.1814
2012-01-01	5.6250
2012-04-01	5.8447
2012-07-01	5.9409
2012-10-01	5.6589
2013-01-01	6.2370
2013-04-01	6.1986
2013-07-01	6.2127
2013-10-01	6.1984
2014-01-01	6.2068
2014-04-01	6.2273
2014-07-01	5.4854
2014-10-01	5.4046
2015-01-01	5.3530
2015-04-01	5.3977