Quarter	Billions of US Dollars
1993-07-01	2.2368
1993-10-01	2.3106
1994-01-01	2.3119
1994-04-01	2.6678
1994-07-01	2.9687
1994-10-01	2.7509
1995-01-01	2.9570
1995-04-01	2.8858
1995-07-01	2.9059
1995-10-01	2.7506
1996-01-01	2.8217
1996-04-01	2.9792
1996-07-01	3.1715
1996-10-01	3.4736
1997-01-01	3.7265
1997-04-01	4.0454
1997-07-01	4.6001
1997-10-01	4.6076
1998-01-01	4.5040
1998-04-01	4.6915
1998-07-01	4.5488
1998-10-01	4.5970
1999-01-01	4.4709
1999-04-01	4.0345
1999-07-01	3.7909
1999-10-01	3.5552
2000-01-01	3.2082
2000-04-01	3.1342
2000-07-01	3.0901
2000-10-01	3.1182
2001-01-01	3.0488
2001-04-01	2.8122
2001-07-01	2.8610
2001-10-01	2.8444
2002-01-01	2.9475
2002-04-01	3.0672
2002-07-01	3.0325
2002-10-01	3.1630
2003-01-01	3.1683
2003-04-01	3.2190
2003-07-01	3.3416
2003-10-01	3.2260
2004-01-01	3.7281
2004-04-01	4.5661
2004-07-01	5.5276
2004-10-01	6.9568
2005-01-01	9.1535
2005-04-01	9.5162
2005-07-01	10.0744
2005-10-01	10.6970
2006-01-01	13.2830
2006-04-01	15.6213
2006-07-01	16.1634
2006-10-01	17.0112
2007-01-01	18.7519
2007-04-01	19.9932
2007-07-01	20.8557
2007-10-01	22.0085
2008-01-01	22.3219
2008-04-01	22.4402
2008-07-01	23.4901
2008-10-01	23.4374
2009-01-01	22.9149
2009-04-01	23.4766
2009-07-01	24.3161
2009-10-01	26.3935
2010-01-01	25.8107
2010-04-01	25.6884
2010-07-01	25.2054
2010-10-01	24.5287
2011-01-01	22.8700
2011-04-01	24.2540
2011-07-01	25.4989
2011-10-01	24.8967
2012-01-01	24.1327
2012-04-01	22.0643
2012-07-01	20.1970
2012-10-01	21.6458
2013-01-01	22.8191
2013-04-01	25.2873
2013-07-01	26.3899
2013-10-01	27.1134
2014-01-01	27.4367
2014-04-01	26.7773
2014-07-01	30.6007
2014-10-01	30.3941
2015-01-01	30.8869
2015-04-01	32.9516