Quarter	Millions of US Dollars
2008-01-01	299
2008-04-01	223
2008-07-01	224
2008-10-01	284
2009-01-01	430
2009-04-01	533
2009-07-01	559
2009-10-01	558
2010-01-01	396
2010-04-01	402
2010-07-01	325
2010-10-01	106
2011-01-01	197
2011-04-01	294
2011-07-01	278
2011-10-01	69
2012-01-01	120
2012-04-01	88
2012-07-01	62
2013-01-01	21
2013-04-01	79
2013-07-01	10
2013-10-01	68
2014-01-01	67
2014-04-01	49
2014-07-01	2
2014-10-01	2
2015-01-01	19
2015-07-01	1
2015-10-01	8
2016-01-01	66
2016-04-01	75
2016-07-01	130