Quarter	Billions of US Dollars
1993-07-01	0.36437
1993-10-01	0.57181
1994-01-01	0.55213
1994-04-01	0.80439
1994-07-01	0.88507
1994-10-01	0.79584
1995-01-01	0.99903
1995-04-01	0.80104
1995-07-01	1.13044
1995-10-01	1.93603
1996-01-01	2.50286
1996-04-01	2.76301
1996-07-01	3.43059
1996-10-01	3.58616
1997-01-01	2.87804
1997-04-01	2.85563
1997-07-01	2.60831
1997-10-01	2.19035
1998-01-01	2.08279
1998-04-01	1.60963
1998-07-01	1.52547
1998-10-01	2.35454
1999-01-01	3.52053
1999-04-01	3.02984
1999-07-01	4.37469
1999-10-01	3.26695
2000-01-01	4.30289
2000-04-01	4.13408
2000-07-01	3.62849
2000-10-01	4.28210
2001-01-01	3.89938
2001-04-01	2.68918
2001-07-01	2.32753
2001-10-01	3.23148
2002-01-01	2.97972
2002-04-01	2.67661
2002-07-01	2.60387
2002-10-01	2.57133
2003-01-01	2.79743
2003-04-01	2.44959
2003-07-01	2.46041
2003-10-01	2.75249
2004-01-01	2.88037
2004-04-01	3.58049
2004-07-01	3.70529
2004-10-01	2.73311
2005-01-01	3.00800
2005-04-01	3.54373
2005-07-01	3.67299
2005-10-01	4.34446
2006-01-01	4.55912
2006-04-01	4.74540
2006-07-01	4.09662
2006-10-01	4.54651
2007-01-01	6.02254
2007-04-01	6.27333
2007-07-01	5.36732
2007-10-01	7.44984
2008-01-01	8.88887
2008-04-01	9.19756
2008-07-01	6.84606
2008-10-01	5.37078
2009-01-01	7.13415
2009-04-01	6.03205
2009-07-01	6.90161
2009-10-01	5.96011
2010-01-01	4.79341
2010-04-01	5.21645
2010-07-01	5.47850
2010-10-01	3.59077
2011-01-01	3.66311
2011-04-01	5.46421
2011-07-01	4.41196
2011-10-01	2.67677
2012-01-01	3.02873
2012-04-01	2.67700
2012-07-01	1.87853
2012-10-01	1.75505
2013-01-01	1.67103
2013-04-01	1.55418
2013-07-01	2.44059
2013-10-01	3.54995
2014-01-01	4.18096
2014-04-01	4.59519
2014-07-01	3.30508
2014-10-01	3.16469
2015-01-01	2.12300
2015-04-01	1.95919