Quarter	Billions of US Dollars
1993-07-01	1.6572
1993-10-01	1.7039
1994-01-01	1.9070
1994-04-01	1.9636
1994-07-01	2.1312
1994-10-01	1.3163
1995-01-01	2.1302
1995-04-01	2.1298
1995-07-01	1.8435
1995-10-01	1.5016
1996-01-01	1.5240
1996-04-01	1.2992
1996-07-01	0.7487
1996-10-01	0.6611
1997-01-01	2.4501
1997-04-01	2.6138
1997-07-01	2.1449
1997-10-01	1.3225
1998-01-01	2.5774
1998-04-01	3.0242
1998-07-01	3.5154
1998-10-01	2.8645
1999-01-01	3.1125
1999-04-01	3.0219
1999-07-01	4.5362
1999-10-01	2.6305
2000-01-01	4.4144
2000-04-01	5.6545
2000-07-01	4.7558
2000-10-01	4.3010
2001-01-01	5.5482
2001-04-01	4.4170
2001-07-01	5.2068
2001-10-01	4.9316
2002-01-01	5.1894
2002-04-01	7.8870
2002-07-01	6.8112
2002-10-01	6.4609
2003-01-01	7.6303
2003-04-01	7.0850
2003-07-01	6.7873
2003-10-01	7.9967
2004-01-01	7.4023
2004-04-01	7.0408
2004-07-01	7.4289
2004-10-01	10.6627
2005-01-01	9.5237
2005-04-01	10.8824
2005-07-01	9.7141
2005-10-01	9.6217
2006-01-01	11.9399
2006-04-01	14.6072
2006-07-01	15.8907
2006-10-01	17.2324
2007-01-01	20.5053
2007-04-01	20.0742
2007-07-01	22.0437
2007-10-01	28.0952
2008-01-01	35.4239
2008-04-01	32.1914
2008-07-01	30.4118
2008-10-01	34.0112
2009-01-01	34.2921
2009-04-01	32.1619
2009-07-01	35.5149
2009-10-01	30.6269
2010-01-01	32.8985
2010-04-01	34.0884
2010-07-01	33.1462
2010-10-01	31.7039
2011-01-01	37.2531
2011-04-01	34.1744
2011-07-01	33.0057
2011-10-01	34.9177
2012-01-01	41.1444
2012-04-01	42.9511
2012-07-01	46.7734
2012-10-01	41.5845
2013-01-01	34.6858
2013-04-01	32.9853
2013-07-01	33.3103
2013-10-01	38.5017
2014-01-01	36.7212
2014-04-01	37.3847
2014-07-01	38.0509
2014-10-01	33.8494
2015-01-01	38.3815
2015-04-01	30.5620