Quarter	Millions of US Dollars
1994-04-01	0
1994-07-01	0
1994-10-01	0
1995-01-01	0
1995-04-01	0
1995-07-01	0
1995-10-01	0
1996-01-01	0
1996-04-01	0
1996-07-01	0
1996-10-01	0
1997-01-01	0
1997-04-01	0
1997-07-01	0
1997-10-01	0
1998-01-01	0
1998-04-01	0
1998-07-01	0
1998-10-01	0
1999-01-01	0
1999-04-01	0
1999-07-01	0
1999-10-01	0
2000-01-01	0
2000-04-01	77
2000-07-01	77
2000-10-01	77
2001-01-01	77
2001-04-01	77
2001-07-01	77
2001-10-01	77
2002-01-01	77
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	0
2006-01-01	0
2006-04-01	0
2006-07-01	0
2006-10-01	0
2007-01-01	0
2007-04-01	0
2007-07-01	120
2007-10-01	120
2008-01-01	120
2008-04-01	120
2008-07-01	0
2008-10-01	0
2009-01-01	250
2009-04-01	600
2009-07-01	600
2009-10-01	600
2010-01-01	350
2010-04-01	600
2010-07-01	600
2010-10-01	60
2011-01-01	410
2011-04-01	232
2011-07-01	345
2011-10-01	300
2012-01-01	501
2012-04-01	718
2012-07-01	756
2012-10-01	845
2013-01-01	782
2013-04-01	621
2013-07-01	319
2013-10-01	620
2014-01-01	971
2014-04-01	1675
2014-07-01	1596
2014-10-01	1335
2015-01-01	843
2015-04-01	676
2015-07-01	744
2015-10-01	1261
2016-01-01	1174
2016-04-01	2252
2016-07-01	2183
2016-10-01	3563
2017-01-01	3393
2017-04-01	1608
2017-07-01	1199
2017-10-01	2275
2018-01-01	6056
2018-04-01	7499