Quarter	Millions of US Dollars
1994-07-01	520
1994-10-01	520
1995-01-01	520
1995-04-01	520
1995-07-01	520
1995-10-01	520
1996-01-01	520
1996-04-01	520
1996-07-01	520
1996-10-01	520
1997-01-01	520
1997-04-01	520
1997-07-01	518
1997-10-01	518
1998-01-01	516
1998-04-01	516
1998-07-01	514
1998-10-01	514
1999-01-01	512
1999-04-01	512
1999-07-01	510
1999-10-01	510
2000-01-01	508
2000-04-01	508
2000-07-01	506
2000-10-01	506
2001-01-01	497
2001-04-01	497
2001-07-01	987
2001-10-01	987
2002-01-01	977
2002-04-01	977
2002-07-01	967
2002-10-01	967
2003-01-01	1557
2003-04-01	1557
2003-07-01	1547
2003-10-01	1547
2004-01-01	1537
2004-04-01	1537
2004-07-01	1527
2004-10-01	1527
2005-01-01	1518
2005-04-01	487
2005-07-01	441
2005-10-01	441
2006-01-01	731
2006-04-01	731
2006-07-01	701
2006-10-01	701
2007-01-01	692
2007-04-01	692
2007-07-01	682
2007-10-01	682
2008-01-01	672
2008-04-01	672
2008-07-01	662
2008-10-01	662
2009-01-01	652
2009-04-01	652
2009-07-01	642
2009-10-01	642
2010-01-01	642
2010-04-01	1392
2010-07-01	1392
2010-10-01	1392
2011-01-01	1392
2011-04-01	1392
2011-07-01	1892
2011-10-01	2142
2012-01-01	2142
2012-04-01	2142
2012-07-01	2142
2012-10-01	2142
2013-01-01	2129
2013-04-01	3129
2013-07-01	3129
2013-10-01	3629
2014-01-01	3629
2014-04-01	4879
2014-07-01	5129
2014-10-01	5129
2015-01-01	7629
2015-04-01	8629
2015-07-01	8629
2015-10-01	8629
2016-01-01	9629
2016-04-01	9629
2016-07-01	10129
2016-10-01	10129
2017-01-01	11329
2017-04-01	11829
2017-07-01	11829
2017-10-01	11829
2018-01-01	13639
2018-04-01	13639