Quarter	Billions of US Dollars
1993-07-01	2.7805
1993-10-01	3.6233
1994-01-01	4.4821
1994-04-01	4.5105
1994-07-01	6.1553
1994-10-01	6.6710
1995-01-01	8.1877
1995-04-01	9.6718
1995-07-01	9.0879
1995-10-01	9.9070
1996-01-01	10.0479
1996-04-01	10.8303
1996-07-01	10.8375
1996-10-01	10.5097
1997-01-01	10.3509
1997-04-01	11.0030
1997-07-01	11.2775
1997-10-01	11.7558
1998-01-01	12.2189
1998-04-01	12.3668
1998-07-01	13.1769
1998-10-01	13.3835
1999-01-01	11.0365
1999-04-01	10.7031
1999-07-01	10.8308
1999-10-01	11.2305
2000-01-01	10.3475
2000-04-01	9.4783
2000-07-01	8.8890
2000-10-01	9.2904
2001-01-01	9.2492
2001-04-01	9.2316
2001-07-01	10.4753
2001-10-01	10.9604
2002-01-01	10.6478
2002-04-01	11.1596
2002-07-01	11.7474
2002-10-01	11.9122
2003-01-01	14.7254
2003-04-01	16.5071
2003-07-01	16.6851
2003-10-01	17.9929
2004-01-01	16.7771
2004-04-01	16.6809
2004-07-01	15.9897
2004-10-01	18.2056
2005-01-01	17.2806
2005-04-01	15.1445
2005-07-01	15.0758
2005-10-01	19.2992
2006-01-01	23.4204
2006-04-01	24.5881
2006-07-01	25.1364
2006-10-01	26.5199
2007-01-01	26.8138
2007-04-01	30.3243
2007-07-01	28.9926
2007-10-01	29.9655
2008-01-01	36.3704
2008-04-01	35.2460
2008-07-01	31.8478
2008-10-01	33.0399
2009-01-01	34.9194
2009-04-01	41.4176
2009-07-01	44.8578
2009-10-01	47.0445
2010-01-01	44.1913
2010-04-01	40.3118
2010-07-01	46.6099
2010-10-01	43.6972
2011-01-01	49.3353
2011-04-01	42.5090
2011-07-01	40.0761
2011-10-01	38.6985
2012-01-01	39.1251
2012-04-01	36.8789
2012-07-01	34.6254
2012-10-01	37.9301
2013-01-01	35.6981
2013-04-01	36.3374
2013-07-01	37.4648
2013-10-01	38.2081
2014-01-01	36.3643
2014-04-01	32.6262
2014-07-01	34.6754
2014-10-01	28.3632
2015-01-01	24.4967
2015-04-01	25.2999