Quarter	Millions of US Dollars
2004-10-01	348
2005-01-01	0
2005-04-01	0
2005-07-01	0
2005-10-01	10
2006-01-01	10
2006-04-01	8
2006-07-01	75
2006-10-01	80
2007-01-01	82
2007-04-01	76
2007-07-01	728
2007-10-01	1252
2008-01-01	434
2008-04-01	475
2008-07-01	499
2008-10-01	461
2009-01-01	362
2009-04-01	368
2009-07-01	412
2009-10-01	445
2010-01-01	581
2010-04-01	633
2010-07-01	1921
2010-10-01	2835
2011-01-01	5787
2011-04-01	9902
2011-07-01	10146
2011-10-01	11240
2012-01-01	14753
2012-04-01	18757
2012-07-01	21701
2012-10-01	27494
2013-01-01	31010
2013-04-01	33654
2013-07-01	33925
2013-10-01	36790
2014-01-01	37875
2014-04-01	44348
2014-07-01	47085
2014-10-01	49543
2015-01-01	49401
2015-04-01	49459
2015-07-01	46496
2015-10-01	46308
2016-01-01	48309
2016-04-01	49822
2016-07-01	48284
2016-10-01	47792
2017-01-01	49466
2017-04-01	54845
2017-07-01	58423
2017-10-01	59848
2018-01-01	63626