Quarter	Billions of US Dollars
1993-07-01	3.399
1993-10-01	3.180
1994-01-01	4.295
1994-04-01	4.453
1994-07-01	4.781
1994-10-01	4.566
1995-01-01	4.667
1995-04-01	4.885
1995-07-01	4.972
1995-10-01	5.095
1996-01-01	5.367
1996-04-01	5.373
1996-07-01	5.389
1996-10-01	5.099
1997-01-01	4.214
1997-04-01	4.164
1997-07-01	4.249
1997-10-01	4.078
1998-01-01	5.116
1998-04-01	5.865
1998-07-01	6.666
1998-10-01	7.552
1999-01-01	6.687
1999-04-01	6.539
1999-07-01	7.067
1999-10-01	7.259
2000-01-01	7.773
2000-04-01	7.815
2000-07-01	6.999
2000-10-01	7.670
2001-01-01	7.354
2001-04-01	7.627
2001-07-01	7.679
2001-10-01	8.183
2002-01-01	8.731
2002-04-01	10.256
2002-07-01	10.300
2002-10-01	11.011
2003-01-01	12.366
2003-04-01	13.206
2003-07-01	14.622
2003-10-01	15.835
2004-01-01	15.297
2004-04-01	16.165
2004-07-01	17.469
2004-10-01	20.723
2005-01-01	20.119
2005-04-01	20.196
2005-07-01	21.486
2005-10-01	22.714
2006-01-01	23.866
2006-04-01	26.542
2006-07-01	27.931
2006-10-01	33.931
2007-01-01	34.531
2007-04-01	39.957
2007-07-01	43.144
2007-10-01	46.025
2008-01-01	50.374
2008-04-01	55.303
2008-07-01	49.428
2008-10-01	46.900
2009-01-01	55.932
2009-04-01	62.945
2009-07-01	69.107
2009-10-01	67.487
2010-01-01	68.857
2010-04-01	65.563
2010-07-01	81.537
2010-10-01	88.354
2011-01-01	97.812
2011-04-01	99.495
2011-07-01	97.797
2011-10-01	101.072
2012-01-01	112.556
2012-04-01	110.058
2012-07-01	118.530
2012-10-01	122.168
2013-01-01	125.959
2013-04-01	123.041
2013-07-01	129.050
2013-10-01	127.637
2014-01-01	127.606
2014-04-01	119.319
2014-07-01	109.240
2014-10-01	105.568
2015-01-01	95.560
2015-04-01	105.453