Quarter	Billions of US Dollars
1993-07-01	143.777
1993-10-01	136.556
1994-01-01	137.733
1994-04-01	135.817
1994-07-01	130.672
1994-10-01	120.301
1995-01-01	121.245
1995-04-01	113.905
1995-07-01	104.166
1995-10-01	102.002
1996-01-01	101.504
1996-04-01	100.421
1996-07-01	98.338
1996-10-01	93.645
1997-01-01	88.506
1997-04-01	89.303
1997-07-01	86.129
1997-10-01	79.531
1998-01-01	71.368
1998-04-01	71.320
1998-07-01	71.542
1998-10-01	72.782
1999-01-01	71.654
1999-04-01	75.347
1999-07-01	80.169
1999-10-01	81.865
2000-01-01	79.701
2000-04-01	81.602
2000-07-01	80.065
2000-10-01	85.683
2001-01-01	87.013
2001-04-01	90.174
2001-07-01	94.473
2001-10-01	98.872
2002-01-01	100.516
2002-04-01	111.446
2002-07-01	111.203
2002-10-01	113.567
2003-01-01	109.564
2003-04-01	111.904
2003-07-01	115.586
2003-10-01	128.465
2004-01-01	126.865
2004-04-01	132.400
2004-07-01	130.410
2004-10-01	133.028
2005-01-01	125.932
2005-04-01	119.290
2005-07-01	117.884
2005-10-01	115.084
2006-01-01	116.710
2006-04-01	119.822
2006-07-01	117.663
2006-10-01	121.028
2007-01-01	122.619
2007-04-01	125.048
2007-07-01	132.131
2007-10-01	138.584
2008-01-01	149.967
2008-04-01	147.521
2008-07-01	147.299
2008-10-01	146.706
2009-01-01	139.658
2009-04-01	148.131
2009-07-01	156.248
2009-10-01	161.099
2010-01-01	159.995
2010-04-01	163.391
2010-07-01	173.011
2010-10-01	178.215
2011-01-01	180.891
2011-04-01	180.407
2011-07-01	173.888
2011-10-01	171.879
2012-01-01	171.345
2012-04-01	167.247
2012-07-01	170.795
2012-10-01	170.603
2013-01-01	175.929
2013-04-01	182.193
2013-07-01	189.096
2013-10-01	213.686
2014-01-01	223.640
2014-04-01	238.612
2014-07-01	245.702
2014-10-01	243.892
2015-01-01	242.659
2015-04-01	260.075