Quarter	Millions of US Dollars
2004-01-01	811
2004-04-01	806
2004-07-01	807
2004-10-01	825
2005-01-01	818
2005-04-01	797
2005-07-01	795
2005-10-01	766
2006-01-01	787
2006-04-01	802
2006-07-01	787
2006-10-01	781
2007-01-01	795
2007-04-01	847
2007-07-01	864
2007-10-01	920
2008-01-01	954
2008-04-01	953
2008-07-01	943
2008-10-01	926
2009-01-01	753
2009-04-01	798
2009-07-01	921
2009-10-01	962
2010-01-01	936
2010-04-01	918
2010-07-01	1054
2010-10-01	993
2011-01-01	1038
2011-04-01	1050
2011-07-01	996
2011-10-01	965
2012-01-01	662
2012-04-01	630
2012-07-01	637
2012-10-01	392
2013-01-01	381
2013-04-01	351
2013-07-01	354
2013-10-01	357
2014-01-01	356
2014-04-01	412
2014-07-01	400
2014-10-01	383
2015-01-01	368
2015-04-01	373
2015-07-01	373
2015-10-01	409
2016-01-01	416
2016-04-01	439
2016-07-01	643
2016-10-01	646
2017-01-01	695
2017-04-01	719
2017-07-01	817
2017-10-01	857
2018-01-01	867