Quarter	Billions of US Dollars
1993-07-01	1.9371
1993-10-01	2.7355
1994-01-01	3.3874
1994-04-01	3.8176
1994-07-01	4.5709
1994-10-01	4.7737
1995-01-01	4.5253
1995-04-01	4.2666
1995-07-01	4.1729
1995-10-01	4.3608
1996-01-01	4.4284
1996-04-01	4.8763
1996-07-01	4.7026
1996-10-01	4.9064
1997-01-01	4.9009
1997-04-01	5.1382
1997-07-01	6.4204
1997-10-01	6.2501
1998-01-01	6.1929
1998-04-01	6.7224
1998-07-01	7.1077
1998-10-01	7.3927
1999-01-01	8.1126
1999-04-01	8.2194
1999-07-01	9.3523
1999-10-01	10.4325
2000-01-01	11.0235
2000-04-01	13.0936
2000-07-01	13.4619
2000-10-01	13.5147
2001-01-01	12.8777
2001-04-01	14.6766
2001-07-01	14.7590
2001-10-01	20.0225
2002-01-01	22.2224
2002-04-01	23.4963
2002-07-01	22.7857
2002-10-01	22.8908
2003-01-01	23.5385
2003-04-01	23.9746
2003-07-01	25.6855
2003-10-01	28.5246
2004-01-01	29.1851
2004-04-01	29.4127
2004-07-01	28.5336
2004-10-01	29.7218
2005-01-01	29.7834
2005-04-01	29.9244
2005-07-01	29.4251
2005-10-01	29.0026
2006-01-01	29.0883
2006-04-01	30.2704
2006-07-01	30.3268
2006-10-01	31.3639
2007-01-01	31.5543
2007-04-01	33.9110
2007-07-01	34.4117
2007-10-01	35.8939
2008-01-01	36.6074
2008-04-01	36.4175
2008-07-01	37.3226
2008-10-01	36.2943
2009-01-01	36.8922
2009-04-01	40.3846
2009-07-01	41.2713
2009-10-01	42.4405
2010-01-01	42.7543
2010-04-01	43.6188
2010-07-01	44.9709
2010-10-01	46.4123
2011-01-01	45.1356
2011-04-01	47.3363
2011-07-01	46.6788
2011-10-01	44.6070
2012-01-01	47.5424
2012-04-01	46.0777
2012-07-01	48.9855
2012-10-01	49.8586
2013-01-01	50.6397
2013-04-01	50.3186
2013-07-01	51.6399
2013-10-01	51.1482
2014-01-01	51.2417
2014-04-01	50.1097
2014-07-01	50.7129
2014-10-01	48.9719
2015-01-01	47.9730
2015-04-01	50.3260