Quarter	Billions of US Dollars
1993-07-01	0.9807
1993-10-01	0.9659
1994-01-01	1.5440
1994-04-01	1.5059
1994-07-01	1.7814
1994-10-01	1.7614
1995-01-01	1.2992
1995-04-01	1.8570
1995-07-01	3.2218
1995-10-01	3.5435
1996-01-01	3.5814
1996-04-01	3.2531
1996-07-01	1.4590
1996-10-01	1.6993
1997-01-01	2.1433
1997-04-01	2.7006
1997-07-01	2.4441
1997-10-01	2.5754
1998-01-01	2.2359
1998-04-01	2.4075
1998-07-01	3.3049
1998-10-01	3.7597
1999-01-01	3.6886
1999-04-01	3.5551
1999-07-01	4.4742
1999-10-01	4.4618
2000-01-01	3.3331
2000-04-01	2.4946
2000-07-01	0.7813
2000-10-01	1.3729
2001-01-01	1.9010
2001-04-01	2.6277
2001-07-01	3.0809
2001-10-01	3.2746
2002-01-01	3.0296
2002-04-01	3.0618
2002-07-01	3.8729
2002-10-01	4.1286
2003-01-01	5.2218
2003-04-01	4.6230
2003-07-01	4.3019
2003-10-01	4.4949
2004-01-01	3.2103
2004-04-01	4.3850
2004-07-01	4.4197
2004-10-01	4.3121
2005-01-01	4.3304
2005-04-01	3.6629
2005-07-01	2.7174
2005-10-01	3.9802
2006-01-01	5.0149
2006-04-01	4.9532
2006-07-01	7.0532
2006-10-01	6.7868
2007-01-01	6.9827
2007-04-01	8.8891
2007-07-01	9.4753
2007-10-01	11.3734
2008-01-01	14.2997
2008-04-01	15.3838
2008-07-01	14.6432
2008-10-01	15.0179
2009-01-01	17.3671
2009-04-01	19.3507
2009-07-01	21.1722
2009-10-01	20.1578
2010-01-01	16.9091
2010-04-01	16.2515
2010-07-01	18.8651
2010-10-01	20.2439
2011-01-01	21.7968
2011-04-01	20.6841
2011-07-01	16.2445
2011-10-01	16.5477
2012-01-01	18.6239
2012-04-01	20.0642
2012-07-01	22.8259
2012-10-01	24.8110
2013-01-01	24.8173
2013-04-01	24.7155
2013-07-01	27.7340
2013-10-01	22.9920
2014-01-01	23.2351
2014-04-01	23.8216
2014-07-01	27.1739
2014-10-01	33.0549
2015-01-01	30.4641
2015-04-01	29.0985