Quarter	Billions of US Dollars
1993-07-01	1.2807
1993-10-01	2.3595
1994-01-01	2.8247
1994-04-01	3.1657
1994-07-01	3.8365
1994-10-01	4.0016
1995-01-01	4.2564
1995-04-01	4.3422
1995-07-01	5.1584
1995-10-01	7.1492
1996-01-01	6.9497
1996-04-01	5.3097
1996-07-01	5.7756
1996-10-01	6.1459
1997-01-01	6.1926
1997-04-01	7.2719
1997-07-01	7.4038
1997-10-01	8.1653
1998-01-01	9.6235
1998-04-01	11.2672
1998-07-01	12.2789
1998-10-01	12.6467
1999-01-01	14.0073
1999-04-01	16.0323
1999-07-01	17.2592
1999-10-01	18.5790
2000-01-01	21.5698
2000-04-01	21.2566
2000-07-01	22.3250
2000-10-01	23.4633
2001-01-01	24.5759
2001-04-01	26.6946
2001-07-01	28.6640
2001-10-01	30.1289
2002-01-01	33.0010
2002-04-01	35.3577
2002-07-01	36.5730
2002-10-01	36.6156
2003-01-01	37.9713
2003-04-01	40.9319
2003-07-01	41.7084
2003-10-01	41.9536
2004-01-01	44.6876
2004-04-01	45.9559
2004-07-01	47.0174
2004-10-01	48.3588
2005-01-01	49.2914
2005-04-01	52.4923
2005-07-01	55.1949
2005-10-01	50.1173
2006-01-01	50.6671
2006-04-01	53.2432
2006-07-01	54.2432
2006-10-01	56.9973
2007-01-01	57.1853
2007-04-01	60.2378
2007-07-01	60.1158
2007-10-01	62.8753
2008-01-01	59.7138
2008-04-01	59.0387
2008-07-01	59.1370
2008-10-01	59.5198
2009-01-01	57.9786
2009-04-01	61.0584
2009-07-01	62.3803
2009-10-01	61.0593
2010-01-01	62.3700
2010-04-01	60.6932
2010-07-01	61.8001
2010-10-01	60.1813
2011-01-01	61.0247
2011-04-01	60.2353
2011-07-01	59.3254
2011-10-01	58.9781
2012-01-01	60.4368
2012-04-01	57.8966
2012-07-01	57.6698
2012-10-01	56.8194
2013-01-01	57.3374
2013-04-01	55.7601
2013-07-01	56.4064
2013-10-01	56.8429
2014-01-01	57.3573
2014-04-01	56.2495
2014-07-01	56.0025
2014-10-01	51.8888
2015-01-01	53.7391
2015-04-01	55.4452