Quarter	Millions of US Dollars
1994-04-01	155
1994-07-01	155
1994-10-01	155
1995-01-01	155
1995-04-01	155
1995-07-01	155
1995-10-01	155
1996-01-01	155
1996-04-01	155
1996-07-01	155
1996-10-01	155
1997-01-01	155
1997-04-01	155
1997-07-01	155
1997-10-01	155
1998-01-01	155
1998-04-01	155
1998-07-01	155
1998-10-01	155
1999-01-01	155
1999-04-01	155
1999-07-01	155
1999-10-01	154
2000-01-01	154
2000-04-01	154
2000-07-01	154
2000-10-01	154
2001-01-01	154
2001-04-01	77
2001-07-01	77
2001-10-01	77
2002-01-01	77
2003-07-01	120
2003-10-01	120
2004-01-01	120
2004-04-01	120
2004-07-01	120
2004-10-01	120
2005-01-01	120
2005-04-01	120
2005-07-01	120
2005-10-01	720
2006-01-01	720
2006-04-01	720
2006-07-01	720
2006-10-01	720
2007-01-01	720
2007-04-01	720
2007-07-01	720
2007-10-01	720
2008-01-01	720
2008-04-01	720
2008-07-01	600
2008-10-01	600
2009-01-01	600
2009-04-01	600
2009-07-01	600
2009-10-01	600
2010-01-01	350
2010-04-01	600
2010-07-01	729
2010-10-01	189
2011-01-01	691
2011-04-01	515
2011-07-01	502
2011-10-01	459
2012-01-01	501
2012-04-01	718
2012-07-01	756
2012-10-01	941
2013-01-01	1878
2013-04-01	1718
2013-07-01	1417
2013-10-01	1620
2014-01-01	1971
2014-04-01	2675
2014-07-01	2916
2014-10-01	2655
2015-01-01	2163
2015-04-01	1996
2015-07-01	2064
2015-10-01	2581
2016-01-01	2494
2016-04-01	2572
2016-07-01	2503
2016-10-01	3883
2017-01-01	3713
2017-04-01	2978
2017-07-01	2569
2017-10-01	3645
2018-01-01	7824
2018-04-01	9247