Quarter	Billions of US Dollars
1995-10-01	150.327
1996-01-01	147.311
1996-04-01	141.788
1996-07-01	142.998
1996-10-01	134.937
1997-01-01	127.517
1997-04-01	129.121
1997-07-01	131.836
1997-10-01	133.917
1998-01-01	130.393
1998-04-01	132.987
1998-07-01	148.306
1998-10-01	151.787
1999-01-01	139.296
1999-04-01	132.238
1999-07-01	135.841
1999-10-01	126.070
2000-01-01	121.807
2000-04-01	125.281
2000-07-01	118.246
2000-10-01	126.440
2001-01-01	119.702
2001-04-01	115.254
2001-07-01	128.027
2001-10-01	123.002
2002-01-01	125.546
2002-04-01	145.868
2002-07-01	148.081
2002-10-01	161.430
2003-01-01	165.783
2003-04-01	165.938
2003-07-01	171.557
2003-10-01	184.736
2004-01-01	179.395
2004-04-01	183.283
2004-07-01	184.508
2004-10-01	204.646
2005-01-01	193.551
2005-04-01	179.897
2005-07-01	177.981
2005-10-01	174.011
2006-01-01	173.086
2006-04-01	180.492
2006-07-01	174.645
2006-10-01	176.739
2007-01-01	174.662
2007-04-01	171.739
2007-07-01	177.597
2007-10-01	182.705
2008-01-01	205.330
2008-04-01	199.675
2008-07-01	183.509
2008-10-01	188.733
2009-01-01	174.049
2009-04-01	180.525
2009-07-01	186.230
2009-10-01	183.100
2010-01-01	177.338
2010-04-01	172.823
2010-07-01	191.417
2010-10-01	198.340
2011-01-01	202.556
2011-04-01	221.784
2011-07-01	205.311
2011-10-01	196.764
2012-01-01	206.895
2012-04-01	197.064
2012-07-01	203.069
2012-10-01	209.541
2013-01-01	201.763
2013-04-01	204.165
2013-07-01	213.234
2013-10-01	217.333
2014-01-01	220.280
2014-04-01	220.431
2014-07-01	206.061
2014-10-01	200.847
2015-01-01	203.891
2015-04-01	212.390
2015-07-01	202.213
2015-10-01	197.328
2016-01-01	203.268
2016-04-01	198.136
2016-07-01	197.756
2016-10-01	187.956
2017-01-01	193.101
2017-04-01	203.493
2017-07-01	202.611
2017-10-01	203.261
2018-01-01	207.657