Quarter	Billions of US Dollars
2002-01-01	55.579
2002-04-01	65.403
2002-07-01	68.116
2002-10-01	75.998
2003-01-01	78.882
2003-04-01	86.899
2003-07-01	93.673
2003-10-01	107.552
2004-01-01	109.642
2004-04-01	116.416
2004-07-01	128.525
2004-10-01	148.754
2005-01-01	148.570
2005-04-01	147.678
2005-07-01	157.334
2005-10-01	163.011
2006-01-01	177.815
2006-04-01	198.254
2006-07-01	204.397
2006-10-01	223.023
2007-01-01	234.139
2007-04-01	244.686
2007-07-01	264.894
2007-10-01	283.085
2008-01-01	310.683
2008-04-01	315.186
2008-07-01	289.590
2008-10-01	281.446
2009-01-01	267.847
2009-04-01	283.697
2009-07-01	293.197
2009-10-01	287.169
2010-01-01	264.635
2010-04-01	234.171
2010-07-01	257.533
2010-10-01	251.263
2011-01-01	266.286
2011-04-01	269.392
2011-07-01	249.569
2011-10-01	235.484
2012-01-01	240.235
2012-04-01	224.065
2012-07-01	227.356
2012-10-01	228.926
2013-01-01	220.027
2013-04-01	222.296
2013-07-01	227.588
2013-10-01	231.263
2014-01-01	226.369
2014-04-01	220.897
2014-07-01	199.938
2014-10-01	191.824
2015-01-01	165.236
2015-04-01	170.105
2015-07-01	167.073
2015-10-01	160.966
2016-01-01	166.890
2016-04-01	162.335
2016-07-01	162.202
2016-10-01	151.470
2017-01-01	152.525
2017-04-01	161.751
2017-07-01	167.439
2017-10-01	168.156
2018-01-01	172.447