Quarter	Billions of US Dollars
1993-07-01	0.7565
1993-10-01	0.7417
1994-01-01	0.7829
1994-04-01	0.7723
1994-07-01	1.0003
1994-10-01	0.8571
1995-01-01	0.8624
1995-04-01	1.3446
1995-07-01	1.2432
1995-10-01	1.3356
1996-01-01	1.4527
1996-04-01	1.4184
1996-07-01	1.1832
1996-10-01	1.0685
1997-01-01	1.5171
1997-04-01	1.6014
1997-07-01	1.6161
1997-10-01	1.4374
1998-01-01	1.7420
1998-04-01	1.6380
1998-07-01	1.7499
1998-10-01	1.7517
1999-01-01	1.8830
1999-04-01	1.9278
1999-07-01	2.1266
1999-10-01	1.9561
2000-01-01	1.9127
2000-04-01	1.8101
2000-07-01	2.0925
2000-10-01	1.6679
2001-01-01	1.6091
2001-04-01	1.9972
2001-07-01	1.9875
2001-10-01	1.8547
2002-01-01	2.0083
2002-04-01	3.8470
2002-07-01	3.7982
2002-10-01	3.4929
2003-01-01	3.6754
2003-04-01	3.4834
2003-07-01	3.1382
2003-10-01	3.3328
2004-01-01	3.2483
2004-04-01	3.1208
2004-07-01	3.0823
2004-10-01	3.2726
2005-01-01	3.1106
2005-04-01	3.0069
2005-07-01	3.0972
2005-10-01	2.9917
2006-01-01	2.6791
2006-04-01	3.1665
2006-07-01	3.1723
2006-10-01	3.3112
2007-01-01	3.4147
2007-04-01	3.0882
2007-07-01	2.8669
2007-10-01	4.2580
2008-01-01	4.3510
2008-04-01	3.9918
2008-07-01	3.1310
2008-10-01	3.0594
2009-01-01	2.8464
2009-04-01	3.0771
2009-07-01	3.0684
2009-10-01	3.1993
2010-01-01	3.1141
2010-04-01	3.6708
2010-07-01	4.0352
2010-10-01	7.4513
2011-01-01	9.9307
2011-04-01	9.4740
2011-07-01	12.0489
2011-10-01	13.1225
2012-01-01	14.7445
2012-04-01	14.8053
2012-07-01	16.2377
2012-10-01	16.2055
2013-01-01	16.0566
2013-04-01	15.9337
2013-07-01	16.1242
2013-10-01	15.9515
2014-01-01	12.0412
2014-04-01	12.3940
2014-07-01	12.5640
2014-10-01	12.6086
2015-01-01	12.5410
2015-04-01	12.5816