Quarter	Billions of US Dollars
1993-07-01	1.2223
1993-10-01	1.3251
1994-01-01	1.8574
1994-04-01	1.9396
1994-07-01	2.5977
1994-10-01	2.4969
1995-01-01	1.2392
1995-04-01	1.4001
1995-07-01	1.6190
1995-10-01	1.7226
1996-01-01	1.9967
1996-04-01	2.0382
1996-07-01	2.0766
1996-10-01	2.3057
1997-01-01	2.0602
1997-04-01	2.3131
1997-07-01	1.7011
1997-10-01	1.3549
1998-01-01	1.3992
1998-04-01	2.1316
1998-07-01	1.9668
1998-10-01	2.6393
1999-01-01	3.5808
1999-04-01	2.6130
1999-07-01	1.8664
1999-10-01	2.7746
2000-01-01	1.3875
2000-04-01	1.4717
2000-07-01	1.4009
2000-10-01	1.1951
2001-01-01	1.1292
2001-04-01	2.0237
2001-07-01	0.9940
2001-10-01	1.6197
2002-01-01	2.1966
2002-04-01	2.9190
2002-07-01	2.3537
2002-10-01	3.5208
2003-01-01	4.4028
2003-04-01	4.4764
2003-07-01	4.2365
2003-10-01	5.0945
2004-01-01	5.2758
2004-04-01	5.6965
2004-07-01	7.5936
2004-10-01	9.3635
2005-01-01	11.3105
2005-04-01	12.0722
2005-07-01	12.0898
2005-10-01	11.2292
2006-01-01	14.6864
2006-04-01	14.3605
2006-07-01	14.6241
2006-10-01	15.1264
2007-01-01	24.7736
2007-04-01	25.8555
2007-07-01	22.6521
2007-10-01	22.7064
2008-01-01	18.8883
2008-04-01	21.7412
2008-07-01	18.4063
2008-10-01	15.6473
2009-01-01	6.0411
2009-04-01	7.8359
2009-07-01	11.2396
2009-10-01	12.5436
2010-01-01	14.5893
2010-04-01	12.0912
2010-07-01	12.3637
2010-10-01	11.3590
2011-01-01	12.1205
2011-04-01	13.4956
2011-07-01	17.2379
2011-10-01	16.3056
2012-01-01	17.2984
2012-04-01	14.3158
2012-07-01	15.2064
2012-10-01	21.9385
2013-01-01	25.6622
2013-04-01	27.0035
2013-07-01	27.6256
2013-10-01	31.6237
2014-01-01	30.4888
2014-04-01	26.2767
2014-07-01	26.1931
2014-10-01	25.8472
2015-01-01	20.5051
2015-04-01	20.7618