Quarter	Millions of US Dollars
2008-01-01	3347
2008-04-01	2502
2008-07-01	3214
2008-10-01	2436
2009-01-01	3970
2009-04-01	4200
2009-07-01	6845
2009-10-01	7490
2010-01-01	8862
2010-04-01	4643
2010-07-01	5825
2010-10-01	3735
2011-01-01	6359
2011-04-01	7577
2011-07-01	7513
2011-10-01	2070
2012-01-01	7335
2012-04-01	4811
2012-07-01	5245
2012-10-01	270
2013-01-01	5088
2013-04-01	5367
2013-07-01	5496
2013-10-01	2070
2014-01-01	4040
2014-04-01	6084
2014-07-01	5946
2014-10-01	2120
2015-01-01	4442
2015-04-01	4278
2015-07-01	3937
2015-10-01	1508
2016-01-01	4404
2016-04-01	5379
2016-07-01	7655