Quarter	Billions of US Dollars
1993-07-01	0.0432
1993-10-01	0.0015
1994-01-01	0.0170
1994-04-01	0.0350
1994-07-01	0.0306
1994-10-01	0.0205
1995-01-01	0.0378
1995-04-01	0.0379
1995-07-01	0.1675
1995-10-01	0.4466
1996-01-01	0.3922
1996-04-01	0.5760
1996-07-01	0.4051
1996-10-01	0.1804
1997-01-01	0.3283
1997-04-01	0.3381
1997-07-01	0.3763
1997-10-01	0.3508
1998-01-01	0.3447
1998-04-01	0.2398
1998-07-01	0.3434
1998-10-01	0.2079
1999-01-01	0.3969
1999-04-01	0.4282
1999-07-01	0.1928
1999-10-01	0.5487
2000-01-01	1.0906
2000-04-01	1.4697
2000-07-01	1.6533
2000-10-01	2.1333
2001-01-01	2.9247
2001-04-01	3.5195
2001-07-01	5.1864
2001-10-01	4.4473
2002-01-01	6.2611
2002-04-01	7.6005
2002-07-01	7.8031
2002-10-01	8.5719
2003-01-01	10.8123
2003-04-01	14.3012
2003-07-01	13.4890
2003-10-01	16.3361
2004-01-01	18.7248
2004-04-01	20.4932
2004-07-01	19.5864
2004-10-01	20.2806
2005-01-01	18.7358
2005-04-01	16.7942
2005-07-01	17.4589
2005-10-01	19.8478
2006-01-01	21.0650
2006-04-01	24.6335
2006-07-01	26.5977
2006-10-01	27.3102
2007-01-01	26.2572
2007-04-01	30.7202
2007-07-01	34.5909
2007-10-01	37.1187
2008-01-01	42.1211
2008-04-01	44.6560
2008-07-01	37.1618
2008-10-01	34.0304
2009-01-01	36.0813
2009-04-01	48.8864
2009-07-01	56.5967
2009-10-01	46.0808
2010-01-01	50.4806
2010-04-01	31.0877
2010-07-01	29.0875
2010-10-01	25.5246
2011-01-01	30.1884
2011-04-01	40.2006
2011-07-01	41.1104
2011-10-01	41.7310
2012-01-01	33.6923
2012-04-01	27.2544
2012-07-01	22.4174
2012-10-01	20.3042
2013-01-01	21.8581
2013-04-01	21.7002
2013-07-01	24.0117
2013-10-01	25.3083
2014-01-01	23.7392
2014-04-01	17.2747
2014-07-01	13.0243
2014-10-01	11.4467
2015-01-01	8.5413
2015-04-01	8.1968