Quarter	Millions of US Dollars
2005-01-01	78949
2005-04-01	79956
2005-07-01	82846
2005-10-01	87882
2006-01-01	98820
2006-04-01	106076
2006-07-01	112899
2006-10-01	127295
2007-01-01	153547
2007-04-01	163942
2007-07-01	167367
2007-10-01	190717
2008-01-01	187547
2008-04-01	183402
2008-07-01	177380
2008-10-01	170405
2009-01-01	178971
2009-04-01	191521
2009-07-01	203462
2009-10-01	210226
2010-01-01	226665
2010-04-01	231988
2010-07-01	257287
2010-10-01	266243
2011-01-01	272581
2011-04-01	273520
2011-07-01	285574
2011-10-01	279503
2012-01-01	296608
2012-04-01	285278
2012-07-01	287337
2012-10-01	297771
2013-01-01	326459
2013-04-01	300941
2013-07-01	295797
2013-10-01	286155
2014-01-01	295089
2014-04-01	299777
2014-07-01	300326
2014-10-01	300325
2015-01-01	305959
2015-04-01	302103
2015-07-01	283212
2015-10-01	289689
2016-01-01	336731
2016-04-01	332392
2016-07-01	340852
2016-10-01	320487
2017-01-01	344567
2017-04-01	344991
2017-07-01	354657
2017-10-01	368430
2018-01-01	384059