Quarter	Billions of US Dollars
1993-07-01	0.0963
1993-10-01	0.0907
1994-01-01	0.0867
1994-04-01	0.0844
1994-07-01	0.0822
1994-10-01	0.0792
1995-01-01	0.0791
1995-04-01	0.0811
1995-07-01	0.0781
1995-10-01	0.0770
1996-01-01	0.0734
1996-04-01	0.1434
1996-07-01	0.1387
1996-10-01	0.1356
1997-01-01	0.1268
1997-04-01	0.3527
1997-07-01	0.3388
1997-10-01	0.3721
1998-01-01	0.5991
1998-04-01	1.0294
1998-07-01	1.0690
1998-10-01	1.1510
1999-01-01	1.1743
1999-04-01	1.3302
1999-07-01	1.3635
1999-10-01	1.5196
2000-01-01	2.6259
2000-04-01	2.9222
2000-07-01	3.0125
2000-10-01	2.8215
2001-01-01	3.6488
2001-04-01	3.5511
2001-07-01	3.4612
2001-10-01	3.8562
2002-01-01	4.0418
2002-04-01	4.1840
2002-07-01	4.5074
2002-10-01	5.1189
2003-01-01	4.2961
2003-04-01	4.4367
2003-07-01	4.3914
2003-10-01	5.1749
2004-01-01	4.9319
2004-04-01	4.9726
2004-07-01	5.5113
2004-10-01	6.3851
2005-01-01	5.7287
2005-04-01	5.3977
2005-07-01	5.6430
2005-10-01	5.5444
2006-01-01	5.4355
2006-04-01	5.4024
2006-07-01	5.4954
2006-10-01	5.8482
2007-01-01	7.1840
2007-04-01	7.8712
2007-07-01	11.5334
2007-10-01	12.5004
2008-01-01	17.3359
2008-04-01	18.2053
2008-07-01	16.1178
2008-10-01	12.7258
2009-01-01	10.1475
2009-04-01	11.0547
2009-07-01	12.5846
2009-10-01	12.5469
2010-01-01	12.0075
2010-04-01	10.1801
2010-07-01	12.4816
2010-10-01	12.2260
2011-01-01	11.8212
2011-04-01	12.0973
2011-07-01	10.2655
2011-10-01	9.4356
2012-01-01	10.2428
2012-04-01	9.3160
2012-07-01	9.9046
2012-10-01	10.4142
2013-01-01	9.8506
2013-04-01	9.6525
2013-07-01	10.1488
2013-10-01	10.4002
2014-01-01	10.0957
2014-04-01	10.5511
2014-07-01	9.6286
2014-10-01	9.1038
2015-01-01	6.0421
2015-04-01	7.7233