Quarter	Billions of US Dollars
2010-10-01	0.06000
2011-01-01	0.25702
2011-04-01	0.07710
2011-07-01	0.06000
2011-10-01	0.01288
2012-01-01	0.21357
2012-04-01	0.43257
2012-07-01	0.41126
2012-10-01	0.45149
2013-01-01	0.57839
2013-04-01	0.42612
2013-07-01	0.24707
2013-10-01	0.48276
2014-01-01	0.88295
2014-04-01	1.49846
2014-07-01	1.39314
2014-10-01	1.21992
2015-01-01	0.71974
2015-04-01	0.62427