Quarter	Millions of US Dollars
2007-10-01	48448
2008-01-01	57085
2008-04-01	54703
2008-07-01	48484
2008-10-01	47919
2009-01-01	45146
2009-04-01	54803
2009-07-01	61079
2009-10-01	58487
2010-01-01	64663
2010-04-01	67907
2010-07-01	73793
2010-10-01	69801
2011-01-01	74555
2011-04-01	77929
2011-07-01	75033
2011-10-01	75478
2012-01-01	85626
2012-04-01	85546
2012-07-01	86580
2012-10-01	88639
2013-01-01	87295
2013-04-01	85177
2013-07-01	90592
2013-10-01	90589
2014-01-01	94243
2014-04-01	99365
2014-07-01	95714
2014-10-01	82808
2015-01-01	78814
2015-04-01	82213
2015-07-01	68985
2015-10-01	64080
2016-01-01	70614
2016-04-01	74394
2016-07-01	77748
2016-10-01	75603
2017-01-01	83291
2017-04-01	78966
2017-07-01	84854
2017-10-01	87277
2018-01-01	98243