Quarter	Billions of US Dollars
2001-10-01	18406.667
2002-01-01	18551.046
2002-04-01	20187.495
2002-07-01	20114.173
2002-10-01	20910.125
2003-01-01	21646.242
2003-04-01	22570.688
2003-07-01	23558.410
2003-10-01	24751.644
2004-01-01	26248.896
2004-04-01	26273.335
2004-07-01	26553.155
2004-10-01	28382.906
2005-01-01	28211.672
2005-04-01	27594.181
2005-07-01	27556.741
2005-10-01	27376.310
2006-01-01	28006.252
2006-04-01	28705.461
2006-07-01	28718.901
2006-10-01	29274.273
2007-01-01	29876.651
2007-04-01	30162.842
2007-07-01	31459.963
2007-10-01	32391.131
2008-01-01	34495.349
2008-04-01	34466.551
2008-07-01	33687.937
2008-10-01	35235.202
2009-01-01	35259.759
2009-04-01	37994.267
2009-07-01	40313.074
2009-10-01	40947.787
2010-01-01	41374.215
2010-04-01	41782.919
2010-07-01	44835.103
2010-10-01	46246.252
2011-01-01	47797.487
2011-04-01	49286.551
2011-07-01	49163.730
2011-10-01	49501.750
2012-01-01	50505.787
2012-04-01	50609.162
2012-07-01	52126.744
2012-10-01	52009.464
2013-01-01	51414.004
2013-04-01	51366.398
2013-07-01	52386.327
2013-10-01	52979.510
2014-01-01	53820.005
2014-04-01	54712.423
2014-07-01	52859.077
2014-10-01	52000.708
2015-01-01	50602.754
2015-04-01	51461.721
2015-07-01	51126.870
2015-10-01	51632.188
2016-01-01	53823.892
2016-04-01	54780.561
2016-07-01	55469.662
2016-10-01	53575.579
2017-01-01	54973.433
2017-04-01	56388.933
2017-07-01	57832.135
2017-10-01	58790.098
2018-01-01	61077.982