Quarter	Millions of US Dollars
2010-07-01	500
2010-10-01	500
2011-01-01	500
2011-04-01	500
2011-07-01	500
2011-10-01	500
2012-01-01	500
2012-04-01	500
2012-07-01	975
2012-10-01	975
2013-01-01	975
2013-04-01	975
2013-07-01	1725
2013-10-01	1725
2014-01-01	1725
2014-04-01	1725
2014-07-01	1725
2014-10-01	1725
2015-01-01	1725
2015-04-01	1725
2015-07-01	1725
2015-10-01	1725
2016-01-01	1725
2016-04-01	1725
2016-07-01	1725
2016-10-01	2390
2017-01-01	2390
2017-04-01	2390
2017-07-01	2390
2017-10-01	2390
2018-01-01	2390
2018-04-01	2390