Quarter	Billions of US Dollars
1993-07-01	1.3389
1993-10-01	0.9352
1994-01-01	1.2914
1994-04-01	1.4265
1994-07-01	2.1156
1994-10-01	1.7177
1995-01-01	1.7874
1995-04-01	3.9811
1995-07-01	4.1492
1995-10-01	4.7123
1996-01-01	4.2346
1996-04-01	3.0301
1996-07-01	9.6715
1996-10-01	11.1767
1997-01-01	10.9664
1997-04-01	11.0468
1997-07-01	4.6919
1997-10-01	26.1332
1998-01-01	25.9857
1998-04-01	26.2126
1998-07-01	25.8484
1998-10-01	3.6868
1999-01-01	4.3969
1999-04-01	11.5433
1999-07-01	12.8006
1999-10-01	15.0378
2000-01-01	17.4755
2000-04-01	47.2544
2000-07-01	50.3373
2000-10-01	57.1657
2001-01-01	55.6991
2001-04-01	20.1394
2001-07-01	19.0970
2001-10-01	10.1344
2002-01-01	21.6184
2002-04-01	28.0542
2002-07-01	31.5061
2002-10-01	32.5907
2003-01-01	22.9413
2003-04-01	20.4255
2003-07-01	18.8736
2003-10-01	18.6618
2004-01-01	17.9519
2004-04-01	54.4930
2004-07-01	59.0011
2004-10-01	62.1503
2005-01-01	65.3928
2005-04-01	36.0736
2005-07-01	29.3139
2005-10-01	28.2450
2006-01-01	27.1664
2006-04-01	12.4438
2006-07-01	14.8961
2006-10-01	14.5307
2007-01-01	17.4118
2007-04-01	17.6407
2007-07-01	14.8925
2007-10-01	20.9518
2008-01-01	15.0991
2008-04-01	19.3805
2008-07-01	17.6732
2008-10-01	11.8395
2009-01-01	15.7668
2009-04-01	11.3014
2009-07-01	14.0057
2009-10-01	13.8659
2010-01-01	10.4647
2010-04-01	10.9424
2010-07-01	12.4624
2010-10-01	11.0032
2011-01-01	12.8756
2011-04-01	10.5102
2011-07-01	8.5135
2011-10-01	8.3043
2012-01-01	6.7731
2012-04-01	9.0027
2012-07-01	9.4163
2012-10-01	9.0033
2013-01-01	8.6069
2013-04-01	6.3491
2013-07-01	6.2019
2013-10-01	12.7606
2014-01-01	16.2717
2014-04-01	18.6900
2014-07-01	16.3757
2014-10-01	12.6941
2015-01-01	8.7195
2015-04-01	7.3719