Quarter	Billions of US Dollars
1993-07-01	1.9661
1993-10-01	1.9649
1994-01-01	1.9674
1994-04-01	1.9789
1994-07-01	1.9859
1994-10-01	1.9871
1995-01-01	1.9897
1995-04-01	1.9850
1995-07-01	2.2375
1995-10-01	2.2575
1996-01-01	2.4038
1996-04-01	2.4073
1996-07-01	2.6843
1996-10-01	2.7047
1997-01-01	2.6944
1997-04-01	3.1995
1997-07-01	3.1920
1997-10-01	3.1981
1998-01-01	3.2020
1998-04-01	3.1994
1998-07-01	3.2043
1998-10-01	3.0620
1999-01-01	3.0542
1999-04-01	3.2199
1999-07-01	3.2271
1999-10-01	3.2241
2000-01-01	3.2023
2000-04-01	3.1941
2000-07-01	3.0398
2000-10-01	3.0421
2001-01-01	3.0354
2001-04-01	3.9082
2001-07-01	3.8398
2001-10-01	3.8379
2002-01-01	3.8351
2002-04-01	3.8465
2002-07-01	3.8492
2002-10-01	3.8540
2003-01-01	3.8508
2003-04-01	3.8578
2003-07-01	3.8602
2003-10-01	3.8713
2004-01-01	4.6513
2004-04-01	4.6297
2004-07-01	4.6341
2004-10-01	4.7768
2005-01-01	4.7522
2005-04-01	4.7171
2005-07-01	5.3100
2005-10-01	5.6983
2006-01-01	5.7088
2006-04-01	5.8915
2006-07-01	6.3938
2006-10-01	9.9149
2007-01-01	9.5335
2007-04-01	10.4995
2007-07-01	14.3850
2007-10-01	17.2143
2008-01-01	18.8513
2008-04-01	19.3148
2008-07-01	21.0372
2008-10-01	20.9726
2009-01-01	20.9098
2009-04-01	20.5910
2009-07-01	25.1868
2009-10-01	26.2851
2010-01-01	26.2126
2010-04-01	27.3673
2010-07-01	26.8440
2010-10-01	29.3229
2011-01-01	28.9108
2011-04-01	29.2758
2011-07-01	28.4877
2011-10-01	29.7611
2012-01-01	31.7183
2012-04-01	30.5347
2012-07-01	30.5816
2012-10-01	30.0811
2013-01-01	31.3881
2013-04-01	31.1070
2013-07-01	30.7736
2013-10-01	29.8627
2014-01-01	30.1644
2014-04-01	36.8036
2014-07-01	34.0272
2014-10-01	35.7333
2015-01-01	35.3798
2015-04-01	36.3973