Quarter	Billions of US Dollars
2008-01-01	34201.518
2008-04-01	34391.592
2008-07-01	33238.172
2008-10-01	32249.433
2009-01-01	31484.172
2009-04-01	32990.176
2009-07-01	33920.458
2009-10-01	33990.188
2010-01-01	33453.604
2010-04-01	32900.675
2010-07-01	34634.583
2010-10-01	34961.211
2011-01-01	35773.287
2011-04-01	36367.002
2011-07-01	35484.678
2011-10-01	35433.773
2012-01-01	35768.678
2012-04-01	35363.570
2012-07-01	36189.181
2012-10-01	36299.615
2013-01-01	35726.730
2013-04-01	35768.327
2013-07-01	36653.901
2013-10-01	36885.600
2014-01-01	36993.178
2014-04-01	37618.534
2014-07-01	36598.104
2014-10-01	35937.167
2015-01-01	34771.132
2015-04-01	35683.487
2015-07-01	35432.014
2015-10-01	35393.801
2016-01-01	36406.244
2016-04-01	36764.409
2016-07-01	37436.218
2016-10-01	36625.789
2017-01-01	37626.863
2017-04-01	38893.468
2017-07-01	40039.198
2017-10-01	40957.962
2018-01-01	42030.970