Quarter	Billions of US Dollars
1993-07-01	4.9803
1993-10-01	4.3520
1994-01-01	7.1054
1994-04-01	4.2725
1994-07-01	5.7576
1994-10-01	5.8178
1995-01-01	5.8296
1995-04-01	5.7271
1995-07-01	4.9458
1995-10-01	3.4387
1996-01-01	4.5224
1996-04-01	10.7025
1996-07-01	5.4922
1996-10-01	4.6640
1997-01-01	3.6006
1997-04-01	4.3222
1997-07-01	4.1211
1997-10-01	4.2197
1998-01-01	4.1351
1998-04-01	6.2817
1998-07-01	4.7279
1998-10-01	3.4141
1999-01-01	3.5916
1999-04-01	6.6609
1999-07-01	6.3517
1999-10-01	2.2310
2000-01-01	7.2226
2000-04-01	5.2180
2000-07-01	6.6204
2000-10-01	7.2104
2001-01-01	7.3819
2001-04-01	7.1216
2001-07-01	5.9819
2001-10-01	5.0211
2002-01-01	5.4667
2002-04-01	5.7086
2002-07-01	6.9905
2002-10-01	4.8435
2003-01-01	5.8959
2003-04-01	4.7622
2003-07-01	4.7472
2003-10-01	4.4006
2004-01-01	8.2507
2004-04-01	5.7297
2004-07-01	7.2050
2004-10-01	7.0802
2005-01-01	9.4552
2005-04-01	15.1251
2005-07-01	11.9355
2005-10-01	9.7316
2006-01-01	11.5035
2006-04-01	10.5988
2006-07-01	11.0925
2006-10-01	12.9199
2007-01-01	15.1458
2007-04-01	17.3292
2007-07-01	15.8371
2007-10-01	22.8050
2008-01-01	25.4919
2008-04-01	29.3061
2008-07-01	37.8665
2008-10-01	20.7979
2009-01-01	25.4265
2009-04-01	29.5677
2009-07-01	30.0084
2009-10-01	28.0956
2010-01-01	35.2521
2010-04-01	31.3843
2010-07-01	26.2086
2010-10-01	32.2799
2011-01-01	24.7045
2011-04-01	28.8114
2011-07-01	34.4341
2011-10-01	36.6265
2012-01-01	38.0945
2012-04-01	33.7186
2012-07-01	28.7392
2012-10-01	30.6008
2013-01-01	37.8461
2013-04-01	24.0542
2013-07-01	32.7438
2013-10-01	24.1032
2014-01-01	26.7436
2014-04-01	32.8961
2014-07-01	32.6317
2014-10-01	32.8299
2015-01-01	19.9714
2015-04-01	21.3309