Quarter	Billions of US Dollars
1993-07-01	0.36866
1993-10-01	0.27292
1994-01-01	0.64855
1994-04-01	0.99078
1994-07-01	1.13301
1994-10-01	0.94943
1995-01-01	0.77094
1995-04-01	0.53553
1995-07-01	0.76119
1995-10-01	0.65861
1996-01-01	1.00219
1996-04-01	0.96295
1996-07-01	0.76391
1996-10-01	0.86487
1997-01-01	0.33271
1997-04-01	0.30726
1997-07-01	0.25577
1997-10-01	0.11753
1998-01-01	0.19939
1998-04-01	0.27719
1998-07-01	0.32350
1998-10-01	0.33043
1999-01-01	0.53248
1999-04-01	0.52288
1999-07-01	0.66472
1999-10-01	1.26793
2000-01-01	1.50331
2000-04-01	2.48351
2000-07-01	2.37475
2000-10-01	2.13193
2001-01-01	1.67192
2001-04-01	1.03231
2001-07-01	1.95904
2001-10-01	1.60033
2002-01-01	1.48180
2002-04-01	1.67189
2002-07-01	0.84373
2002-10-01	1.05308
2003-01-01	1.05881
2003-04-01	0.89474
2003-07-01	2.04735
2003-10-01	2.14338
2004-01-01	2.06375
2004-04-01	2.06322
2004-07-01	1.29851
2004-10-01	1.58286
2005-01-01	1.64649
2005-04-01	1.64625
2005-07-01	1.28104
2005-10-01	1.02273
2006-01-01	1.15868
2006-04-01	0.89527
2006-07-01	0.59620
2006-10-01	0.91207
2007-01-01	1.68892
2007-04-01	1.91569
2007-07-01	1.93858
2007-10-01	2.30748
2008-01-01	2.06315
2008-04-01	2.09282
2008-07-01	3.25370
2008-10-01	2.28411
2009-01-01	2.49811
2009-04-01	2.35690
2009-07-01	2.12922
2009-10-01	2.78751
2010-01-01	4.26242
2010-04-01	4.83759
2010-07-01	4.48422
2010-10-01	6.78465
2011-01-01	4.78540
2011-04-01	6.36985
2011-07-01	5.91837
2011-10-01	3.74928
2012-01-01	4.45892
2012-04-01	4.53350
2012-07-01	5.74293
2012-10-01	7.27169
2013-01-01	6.88956
2013-04-01	6.39981
2013-07-01	5.08708
2013-10-01	4.17040
2014-01-01	4.14210
2014-04-01	3.32645
2014-07-01	3.34446
2014-10-01	2.83549
2015-01-01	2.76190
2015-04-01	3.30740