Quarter	Billions of US Dollars
1993-07-01	4.9937
1993-10-01	5.0515
1994-01-01	4.9068
1994-04-01	3.3741
1994-07-01	4.3923
1994-10-01	4.0867
1995-01-01	4.6926
1995-04-01	6.2325
1995-07-01	6.5228
1995-10-01	7.4141
1996-01-01	8.0414
1996-04-01	7.7528
1996-07-01	5.6793
1996-10-01	9.3640
1997-01-01	8.4904
1997-04-01	8.6991
1997-07-01	10.0761
1997-10-01	9.7417
1998-01-01	10.7599
1998-04-01	11.3189
1998-07-01	10.5477
1998-10-01	12.0338
1999-01-01	10.2304
1999-04-01	9.2965
1999-07-01	12.4072
1999-10-01	12.4648
2000-01-01	14.3415
2000-04-01	16.4531
2000-07-01	14.7196
2000-10-01	18.9422
2001-01-01	21.2191
2001-04-01	20.5776
2001-07-01	19.3033
2001-10-01	15.4294
2002-01-01	13.0232
2002-04-01	15.8191
2002-07-01	15.3870
2002-10-01	16.9519
2003-01-01	22.8246
2003-04-01	25.9352
2003-07-01	24.7785
2003-10-01	26.8475
2004-01-01	31.0532
2004-04-01	28.0465
2004-07-01	30.0725
2004-10-01	33.6310
2005-01-01	27.6358
2005-04-01	24.5273
2005-07-01	28.6733
2005-10-01	25.2188
2006-01-01	31.1674
2006-04-01	31.4019
2006-07-01	34.3400
2006-10-01	38.0194
2007-01-01	40.6663
2007-04-01	38.8204
2007-07-01	41.3624
2007-10-01	49.3008
2008-01-01	53.3504
2008-04-01	57.4095
2008-07-01	51.8221
2008-10-01	42.2073
2009-01-01	53.2342
2009-04-01	50.9478
2009-07-01	46.8458
2009-10-01	45.4074
2010-01-01	45.6287
2010-04-01	38.8227
2010-07-01	48.6918
2010-10-01	50.4695
2011-01-01	51.0842
2011-04-01	49.7472
2011-07-01	41.3199
2011-10-01	32.6618
2012-01-01	42.4862
2012-04-01	40.0829
2012-07-01	39.5527
2012-10-01	39.0205
2013-01-01	35.9488
2013-04-01	48.3835
2013-07-01	56.4098
2013-10-01	55.5174
2014-01-01	42.3225
2014-04-01	31.8301
2014-07-01	32.2349
2014-10-01	34.3588
2015-01-01	39.2728
2015-04-01	38.5451