Quarter	Billions of US Dollars
1993-07-01	14.9054
1993-10-01	14.2671
1994-01-01	10.5426
1994-04-01	20.7632
1994-07-01	33.3912
1994-10-01	25.2966
1995-01-01	16.9925
1995-04-01	29.9958
1995-07-01	29.7993
1995-10-01	21.4898
1996-01-01	25.0252
1996-04-01	42.9765
1996-07-01	46.0781
1996-10-01	27.1627
1997-01-01	24.1481
1997-04-01	20.4091
1997-07-01	20.4499
1997-10-01	17.6012
1998-01-01	10.3741
1998-04-01	7.9792
1998-07-01	7.9429
1998-10-01	8.6778
1999-01-01	8.8050
1999-04-01	12.3499
1999-07-01	18.3835
1999-10-01	20.7979
2000-01-01	26.6255
2000-04-01	37.4663
2000-07-01	25.5610
2000-10-01	14.8138
2001-01-01	17.6805
2001-04-01	24.6638
2001-07-01	23.2397
2001-10-01	15.0380
2002-01-01	12.3154
2002-04-01	16.0484
2002-07-01	13.6344
2002-10-01	18.4499
2003-01-01	14.4512
2003-04-01	17.8260
2003-07-01	17.5461
2003-10-01	16.5767
2004-01-01	17.2335
2004-04-01	20.2822
2004-07-01	13.8893
2004-10-01	17.4257
2005-01-01	22.1235
2005-04-01	19.4758
2005-07-01	22.7051
2005-10-01	20.4106
2006-01-01	17.8149
2006-04-01	16.0696
2006-07-01	14.6181
2006-10-01	25.6545
2007-01-01	23.3965
2007-04-01	36.0484
2007-07-01	20.2924
2007-10-01	22.4623
2008-01-01	14.2225
2008-04-01	20.0305
2008-07-01	18.1058
2008-10-01	12.9063
2009-01-01	8.5670
2009-04-01	10.9056
2009-07-01	15.8798
2009-10-01	12.1025
2010-01-01	11.9179
2010-04-01	18.1396
2010-07-01	19.0902
2010-10-01	18.3864
2011-01-01	22.1622
2011-04-01	16.7232
2011-07-01	17.7716
2011-10-01	18.3885
2012-01-01	22.9379
2012-04-01	21.2263
2012-07-01	17.1242
2012-10-01	21.3407
2013-01-01	11.3964
2013-04-01	20.7432
2013-07-01	18.0210
2013-10-01	21.9907
2014-01-01	14.2083
2014-04-01	18.7554
2014-07-01	15.6434
2014-10-01	18.6960
2015-01-01	13.9073
2015-04-01	21.6018