Quarter	Billions of US Dollars
1993-07-01	3.8783
1993-10-01	3.7892
1994-01-01	2.8106
1994-04-01	3.0992
1994-07-01	3.4970
1994-10-01	3.2415
1995-01-01	3.7743
1995-04-01	2.7282
1995-07-01	2.8351
1995-10-01	4.1488
1996-01-01	4.2369
1996-04-01	4.2699
1996-07-01	3.1714
1996-10-01	3.2312
1997-01-01	3.0710
1997-04-01	3.1650
1997-07-01	3.5479
1997-10-01	3.0288
1998-01-01	3.1952
1998-04-01	3.3766
1998-07-01	3.6965
1998-10-01	4.1933
1999-01-01	4.2874
1999-04-01	4.5637
1999-07-01	5.0922
1999-10-01	5.7240
2000-01-01	5.9571
2000-04-01	5.7374
2000-07-01	6.5177
2000-10-01	7.0048
2001-01-01	6.3291
2001-04-01	7.3014
2001-07-01	7.0963
2001-10-01	6.6648
2002-01-01	7.7489
2002-04-01	8.9241
2002-07-01	8.1212
2002-10-01	8.6526
2003-01-01	8.4144
2003-04-01	8.1193
2003-07-01	7.3834
2003-10-01	8.2317
2004-01-01	11.3254
2004-04-01	13.0531
2004-07-01	17.5591
2004-10-01	17.7993
2005-01-01	18.7299
2005-04-01	16.6050
2005-07-01	17.3152
2005-10-01	18.2699
2006-01-01	18.9340
2006-04-01	22.7496
2006-07-01	23.8957
2006-10-01	25.7006
2007-01-01	29.7250
2007-04-01	33.8378
2007-07-01	33.5631
2007-10-01	37.0390
2008-01-01	41.0148
2008-04-01	38.6677
2008-07-01	40.5229
2008-10-01	38.4842
2009-01-01	33.3745
2009-04-01	31.8614
2009-07-01	29.9194
2009-10-01	29.2934
2010-01-01	32.7599
2010-04-01	35.2796
2010-07-01	41.2797
2010-10-01	42.3994
2011-01-01	50.5092
2011-04-01	44.4416
2011-07-01	50.7353
2011-10-01	47.2855
2012-01-01	43.6935
2012-04-01	38.5337
2012-07-01	40.1308
2012-10-01	40.9505
2013-01-01	46.0601
2013-04-01	47.6213
2013-07-01	39.9956
2013-10-01	37.6190
2014-01-01	31.5469
2014-04-01	29.7826
2014-07-01	28.1595
2014-10-01	27.9077
2015-01-01	27.1445
2015-04-01	25.4896