Quarter	Billions of US Dollars
1993-07-01	1.6969
1993-10-01	1.5033
1994-01-01	1.5230
1994-04-01	1.6415
1994-07-01	1.6655
1994-10-01	2.5820
1995-01-01	1.8400
1995-04-01	2.7460
1995-07-01	1.8555
1995-10-01	2.1397
1996-01-01	1.7138
1996-04-01	1.6295
1996-07-01	1.3158
1996-10-01	2.0744
1997-01-01	2.4681
1997-04-01	1.8488
1997-07-01	2.0977
1997-10-01	2.7282
1998-01-01	2.8933
1998-04-01	4.0277
1998-07-01	3.7745
1998-10-01	3.2305
1999-01-01	4.6729
1999-04-01	4.8646
1999-07-01	5.1300
1999-10-01	4.6733
2000-01-01	4.7041
2000-04-01	5.0871
2000-07-01	4.3201
2000-10-01	5.5545
2001-01-01	4.4348
2001-04-01	3.6109
2001-07-01	2.4050
2001-10-01	4.4370
2002-01-01	2.9308
2002-04-01	4.0080
2002-07-01	4.9962
2002-10-01	5.0104
2003-01-01	4.9031
2003-04-01	4.3266
2003-07-01	3.5781
2003-10-01	5.8916
2004-01-01	4.8975
2004-04-01	3.1652
2004-07-01	4.5140
2004-10-01	6.2428
2005-01-01	9.4796
2005-04-01	8.1793
2005-07-01	9.7514
2005-10-01	9.4576
2006-01-01	11.1923
2006-04-01	11.5774
2006-07-01	10.3307
2006-10-01	11.5687
2007-01-01	16.4859
2007-04-01	17.5446
2007-07-01	17.2103
2007-10-01	16.0885
2008-01-01	18.7844
2008-04-01	11.6705
2008-07-01	16.5801
2008-10-01	18.8336
2009-01-01	12.9422
2009-04-01	4.5105
2009-07-01	3.9894
2009-10-01	6.9421
2010-01-01	6.3443
2010-04-01	9.5463
2010-07-01	6.3019
2010-10-01	10.8021
2011-01-01	19.0267
2011-04-01	15.7726
2011-07-01	25.5766
2011-10-01	28.0337
2012-01-01	27.2844
2012-04-01	27.4961
2012-07-01	24.4818
2012-10-01	27.4476
2013-01-01	15.3491
2013-04-01	18.8712
2013-07-01	16.6854
2013-10-01	14.9345
2014-01-01	13.8566
2014-04-01	13.7520
2014-07-01	18.6218
2014-10-01	23.0483
2015-01-01	33.2684
2015-04-01	28.6011