Quarter	Billions of US Dollars
2008-01-01	42417.605
2008-04-01	43019.215
2008-07-01	41711.177
2008-10-01	41717.952
2009-01-01	41043.826
2009-04-01	43036.580
2009-07-01	44290.608
2009-10-01	44109.017
2010-01-01	43559.434
2010-04-01	42899.286
2010-07-01	45575.650
2010-10-01	46028.392
2011-01-01	47545.192
2011-04-01	48905.698
2011-07-01	48317.977
2011-10-01	48882.701
2012-01-01	50382.234
2012-04-01	50046.175
2012-07-01	51869.730
2012-10-01	52264.064
2013-01-01	52202.062
2013-04-01	52812.428
2013-07-01	54409.871
2013-10-01	54987.916
2014-01-01	55752.197
2014-04-01	56982.301
2014-07-01	55799.414
2014-10-01	55289.471
2015-01-01	54984.014
2015-04-01	56272.797
2015-07-01	56137.339
2015-10-01	56467.743
2016-01-01	58898.343
2016-04-01	59212.124
2016-07-01	59946.261
2016-10-01	58050.907
2017-01-01	59863.360
2017-04-01	61546.157
2017-07-01	63319.225
2017-10-01	64675.842
2018-01-01	67531.504