Quarter	Millions of US Dollars
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	0
2000-07-01	0
2000-10-01	0
2001-01-01	0
2001-04-01	0
2001-07-01	0
2001-10-01	0
2002-01-01	0
2002-04-01	0
2002-07-01	0
2002-10-01	0
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	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	546
2007-10-01	564
2008-01-01	617
2008-04-01	0
2008-07-01	0
2008-10-01	726
2009-01-01	1820
2009-04-01	1336
2009-07-01	628
2009-10-01	790
2010-01-01	646
2010-04-01	682
2010-07-01	1612
2010-10-01	2003
2011-01-01	1989
2011-04-01	1768
2011-07-01	1660
2011-10-01	2275
2012-01-01	2385
2012-04-01	1998
2012-07-01	1944
2012-10-01	1441
2013-01-01	1324
2013-04-01	1383
2013-07-01	1173
2013-10-01	1702
2014-01-01	1364
2014-04-01	1375
2014-07-01	856
2014-10-01	363
2015-01-01	0
2015-04-01	491
2015-07-01	688
2015-10-01	0
2016-01-01	556
2016-04-01	545
2016-07-01	0
2016-10-01	0
2017-01-01	0
2017-04-01	0
2017-07-01	0
2017-10-01	0
2018-01-01	0