Quarter	Billions of US Dollars
2005-01-01	147.490
2005-04-01	152.388
2005-07-01	165.557
2005-10-01	167.719
2006-01-01	170.388
2006-04-01	150.526
2006-07-01	154.129
2006-10-01	170.604
2007-01-01	182.714
2007-04-01	183.547
2007-07-01	206.592
2007-10-01	210.381
2008-01-01	198.815
2008-04-01	209.186
2008-07-01	205.705
2008-10-01	168.835
2009-01-01	163.555
2009-04-01	185.005
2009-07-01	202.666
2009-10-01	208.812
2010-01-01	212.442
2010-04-01	208.771
2010-07-01	234.774
2010-10-01	223.576
2011-01-01	231.043
2011-04-01	222.414
2011-07-01	198.924
2011-10-01	197.151
2012-01-01	214.491
2012-04-01	212.560
2012-07-01	219.741
2012-10-01	219.953
2013-01-01	220.963
2013-04-01	210.319
2013-07-01	206.872
2013-10-01	195.097
2014-01-01	192.864
2014-04-01	198.676
2014-07-01	185.816
2014-10-01	186.051
2015-01-01	167.950