Quarter	Billions of US Dollars
1993-07-01	0.0378
1993-10-01	0.0373
1994-01-01	0.0382
1994-04-01	0.1181
1994-07-01	0.1213
1994-10-01	0.1232
1995-01-01	0.1268
1995-04-01	0.1289
1995-07-01	0.1267
1995-10-01	0.1273
1996-01-01	0.0852
1996-04-01	0.0851
1996-07-01	0.0852
1996-10-01	0.0857
1997-01-01	0.0830
1997-04-01	0.0455
1997-07-01	0.0425
1997-10-01	0.0388
1998-01-01	0.0405
1998-04-01	0.0381
1998-07-01	0.0386
1998-10-01	0.2198
1999-01-01	0.5571
1999-04-01	0.8934
1999-07-01	1.3039
1999-10-01	1.7977
2000-01-01	1.9867
2000-04-01	2.5674
2000-07-01	2.7858
2000-10-01	3.0061
2001-01-01	3.4123
2001-04-01	3.6556
2001-07-01	4.5239
2001-10-01	4.5884
2002-01-01	4.7345
2002-04-01	5.9237
2002-07-01	6.2702
2002-10-01	6.7251
2003-01-01	6.8653
2003-04-01	6.8446
2003-07-01	7.0569
2003-10-01	8.1024
2004-01-01	10.1996
2004-04-01	10.7378
2004-07-01	10.7639
2004-10-01	11.5086
2005-01-01	11.6097
2005-04-01	11.8172
2005-07-01	11.7461
2005-10-01	12.6904
2006-01-01	13.4522
2006-04-01	15.1329
2006-07-01	15.7123
2006-10-01	16.7870
2007-01-01	18.3428
2007-04-01	20.1284
2007-07-01	20.8030
2007-10-01	22.2339
2008-01-01	24.3242
2008-04-01	26.8177
2008-07-01	29.0584
2008-10-01	28.2848
2009-01-01	24.2068
2009-04-01	24.0518
2009-07-01	26.6736
2009-10-01	26.4600
2010-01-01	27.4676
2010-04-01	26.6604
2010-07-01	29.7915
2010-10-01	30.0186
2011-01-01	31.1438
2011-04-01	33.2541
2011-07-01	31.0361
2011-10-01	33.3821
2012-01-01	35.8184
2012-04-01	34.7757
2012-07-01	37.9181
2012-10-01	38.9344
2013-01-01	38.0019
2013-04-01	37.9694
2013-07-01	37.7389
2013-10-01	38.4017
2014-01-01	38.7756
2014-04-01	39.3133
2014-07-01	39.8188
2014-10-01	37.9404
2015-01-01	36.9825
2015-04-01	40.4895