Quarter	Millions of US Dollars
2003-01-01	0
2003-04-01	0
2003-07-01	0
2003-10-01	0
2004-01-01	0
2004-04-01	0
2004-07-01	0
2004-10-01	0
2005-01-01	0
2005-04-01	0
2005-07-01	0
2005-10-01	239
2006-01-01	591
2006-04-01	800
2006-07-01	803
2006-10-01	654
2007-01-01	894
2007-04-01	1257
2007-07-01	1569
2007-10-01	1025
2008-01-01	1001
2008-04-01	1176
2008-07-01	1392
2008-10-01	1525
2009-01-01	1808
2009-04-01	1600
2009-07-01	1349
2009-10-01	964
2010-01-01	993
2010-04-01	958
2010-07-01	863
2010-10-01	1384
2011-01-01	1493
2011-04-01	1128
2011-07-01	1152
2011-10-01	1095
2012-01-01	1550
2012-04-01	1373
2012-07-01	1604
2012-10-01	2041
2013-01-01	3071
2013-04-01	2323
2013-07-01	1840
2013-10-01	1359
2014-01-01	1997
2014-04-01	2314
2014-07-01	2275
2014-10-01	2383
2015-01-01	2774
2015-04-01	3683
2015-07-01	3630
2015-10-01	3994
2016-01-01	5737
2016-04-01	5482
2016-07-01	5306
2016-10-01	5987
2017-01-01	5871
2017-04-01	5673
2017-07-01	5521
2017-10-01	5814
2018-01-01	5633