Quarter	Millions of US Dollars
2013-04-01	0
2013-07-01	0
2013-10-01	0
2014-01-01	0
2014-04-01	14
2014-07-01	14
2014-10-01	14
2015-01-01	14
2017-01-01	0
2017-04-01	0
2017-07-01	0
2017-10-01	0
2018-01-01	0
2018-04-01	0