Quarter	Billions of US Dollars
2008-01-01	36983.888
2008-04-01	37207.583
2008-07-01	35865.693
2008-10-01	34758.418
2009-01-01	33914.669
2009-04-01	35621.731
2009-07-01	36743.318
2009-10-01	36850.788
2010-01-01	36297.064
2010-04-01	35645.414
2010-07-01	37725.846
2010-10-01	38142.923
2011-01-01	39101.536
2011-04-01	39877.485
2011-07-01	38805.856
2011-10-01	38722.674
2012-01-01	39240.555
2012-04-01	38728.697
2012-07-01	39720.867
2012-10-01	39951.120
2013-01-01	39343.974
2013-04-01	39385.701
2013-07-01	40407.027
2013-10-01	40703.496
2014-01-01	40860.676
2014-04-01	41517.535
2014-07-01	40312.459
2014-10-01	39517.948
2015-01-01	38228.187
2015-04-01	39248.611
2015-07-01	38875.432
2015-10-01	38834.112
2016-01-01	40033.330
2016-04-01	40379.439
2016-07-01	41118.417
2016-10-01	40174.386
2017-01-01	41276.923
2017-04-01	42728.141
2017-07-01	43980.976
2017-10-01	44970.669
2018-01-01	46172.231