Quarter	Billions of US Dollars
2001-10-01	19242.729
2002-01-01	19218.456
2002-04-01	21058.536
2002-07-01	21315.462
2002-10-01	22135.746
2003-01-01	22916.916
2003-04-01	23953.516
2003-07-01	24666.566
2003-10-01	25797.016
2004-01-01	27483.040
2004-04-01	27111.520
2004-07-01	27627.920
2004-10-01	29583.149
2005-01-01	29289.732
2005-04-01	28952.165
2005-07-01	28710.304
2005-10-01	28421.165
2006-01-01	28750.834
2006-04-01	29238.581
2006-07-01	29533.629
2006-10-01	30017.914
2007-01-01	30583.998
2007-04-01	30530.159
2007-07-01	32117.014
2007-10-01	33316.522
2008-01-01	35773.470
2008-04-01	35204.501
2008-07-01	34523.306
2008-10-01	36819.781
2009-01-01	36609.338
2009-04-01	39058.423
2009-07-01	41666.791
2009-10-01	42095.085
2010-01-01	42546.156
2010-04-01	43398.433
2010-07-01	46909.106
2010-10-01	47570.255
2011-01-01	48849.376
2011-04-01	50609.044
2011-07-01	51430.132
2011-10-01	51787.027
2012-01-01	52908.465
2012-04-01	53451.228
2012-07-01	55293.730
2012-10-01	55293.022
2013-01-01	54640.201
2013-04-01	53774.407
2013-07-01	54745.361
2013-10-01	55134.101
2014-01-01	56518.851
2014-04-01	57833.019
2014-07-01	56056.527
2014-10-01	55733.838
2015-01-01	54624.701
2015-04-01	54554.613
2015-07-01	54567.248
2015-10-01	54812.019
2016-01-01	58112.962
2016-04-01	59764.601
2016-07-01	60323.390
2016-10-01	56987.836
2017-01-01	58293.099
2017-04-01	59813.021
2017-07-01	61236.886
2017-10-01	62264.117
2018-01-01	64397.093