Quarter	Billions of US Dollars
2006-01-01	2620.349
2006-04-01	2774.898
2006-07-01	2882.179
2006-10-01	2984.988
2007-01-01	2994.176
2007-04-01	3202.156
2007-07-01	3379.224
2007-10-01	3568.206
2008-01-01	3928.010
2008-04-01	4187.637
2008-07-01	4357.287
2008-10-01	4502.329
2009-01-01	5142.969
2009-04-01	5621.347
2009-07-01	5882.624
2009-10-01	6108.164
2010-01-01	6428.823
2010-04-01	6808.974
2010-07-01	7156.493
2010-10-01	7525.784
2011-01-01	7928.782
2011-04-01	8367.711
2011-07-01	8747.031
2011-10-01	9277.007
2012-01-01	9818.735
2012-04-01	10157.562
2012-07-01	10724.098
2012-10-01	11299.746
2013-01-01	12076.717
2013-04-01	12697.881
2013-07-01	13260.497
2013-10-01	13801.822
2014-01-01	14095.912
2014-04-01	14714.198
2014-07-01	15209.256
2014-10-01	15528.282
2015-01-01	16196.297
2015-04-01	16727.940
2015-07-01	16866.744
2015-10-01	17268.825
2016-01-01	18014.797
2016-04-01	17881.885
2016-07-01	18089.693
2016-10-01	17784.310
2017-01-01	18330.443
2017-04-01	18885.895
2017-07-01	19641.119
2017-10-01	20343.414
2018-01-01	22052.651