Quarter	Millions of US Dollars
2008-10-01	2783
2009-01-01	2662
2009-04-01	2827
2009-07-01	2929
2009-10-01	2881
2010-01-01	2696
2010-04-01	4908
2010-07-01	5459
2010-10-01	5345
2011-01-01	5683
2011-04-01	5781
2011-07-01	5401
2011-10-01	5176
2012-01-01	6678
2012-04-01	6295
2012-07-01	6465
2012-10-01	6597
2013-01-01	6402
2013-04-01	6540
2013-07-01	6753
2013-10-01	4137
2014-01-01	4136
2014-04-01	4097
2014-07-01	3775
2014-10-01	3885
2015-01-01	3443
2015-04-01	3580
2015-07-01	3585
2015-10-01	3484
2016-01-01	3643
2016-04-01	3553
2016-07-01	3572
2016-10-01	3373
2017-01-01	3421
2017-04-01	3652
2017-07-01	3778
2017-10-01	3838
2018-01-01	3943
2018-04-01	3731