Quarter	Billions of US Dollars
1993-07-01	0.0823
1993-10-01	0.0773
1994-01-01	0.0798
1994-04-01	0.0838
1994-07-01	0.0865
1994-10-01	0.0865
1995-01-01	0.0969
1995-04-01	0.1095
1995-07-01	0.1067
1995-10-01	0.1060
1996-01-01	0.1029
1996-04-01	0.1247
1996-07-01	0.0980
1996-10-01	0.0964
1997-01-01	0.0148
1997-04-01	0.0209
1997-07-01	0.0281
1997-10-01	0.0278
1998-01-01	0.0269
1998-04-01	0.0265
1998-07-01	0.0286
1998-10-01	0.0286
1999-01-01	0.0478
1999-04-01	0.0450
1999-07-01	0.0465
1999-10-01	0.0438
2000-01-01	0.0416
2000-04-01	0.0395
2000-07-01	0.0362
2000-10-01	0.0385
2001-01-01	0.0329
2001-04-01	0.0304
2001-07-01	0.0328
2001-10-01	0.0316
2002-01-01	0.0289
2002-04-01	0.0340
2002-07-01	0.0336
2002-10-01	0.0381
2003-01-01	0.0396
2003-04-01	0.0405
2003-07-01	0.0413
2003-10-01	0.2697
2004-01-01	0.2710
2004-04-01	0.2497
2004-07-01	0.2584
2004-10-01	0.3599
2005-01-01	0.3547
2005-04-01	0.3461
2005-07-01	0.3451
2005-10-01	0.3331
2006-01-01	0.3270
2006-04-01	0.3401
2006-07-01	6.8022
2006-10-01	6.7649
2007-01-01	6.8409
2007-04-01	6.9370
2007-07-01	7.2832
2007-10-01	7.5616
2008-01-01	20.9866
2008-04-01	21.7422
2008-07-01	29.3849
2008-10-01	28.0416
2009-01-01	29.5615
2009-04-01	24.3619
2009-07-01	30.7745
2009-10-01	23.0289
2010-01-01	26.0610
2010-04-01	20.1952
2010-07-01	25.8095
2010-10-01	22.6726
2011-01-01	17.2589
2011-04-01	17.5183
2011-07-01	19.1104
2011-10-01	25.4078
2012-01-01	27.9115
2012-04-01	23.4106
2012-07-01	24.0410
2012-10-01	31.4552
2013-01-01	24.9115
2013-04-01	28.5406
2013-07-01	31.7744
2013-10-01	17.7393
2014-01-01	18.4840
2014-04-01	28.2724
2014-07-01	25.8871
2014-10-01	14.1686
2015-01-01	12.5558
2015-04-01	15.8382