Quarter	Millions of US Dollars
1983-04-01	0
1983-07-01	0
1983-10-01	0
1984-01-01	0
1984-04-01	0
1984-07-01	0
1984-10-01	0
1985-01-01	0
1985-04-01	0
1985-07-01	0
1985-10-01	0
1986-01-01	0
1986-04-01	0
1986-07-01	0
1986-10-01	0
1987-01-01	0
1987-04-01	0
1987-07-01	0
1987-10-01	0
1988-01-01	0
1988-04-01	0
1988-07-01	0
1988-10-01	0
1989-01-01	0
1989-04-01	0
1989-07-01	36
1989-10-01	209
1990-01-01	190
1990-04-01	230
1990-07-01	217
1990-10-01	37
1991-01-01	36
1991-04-01	0
1991-07-01	0
1991-10-01	0
1992-01-01	0
1992-04-01	40
1992-07-01	42
1992-10-01	40
1993-01-01	43
1993-04-01	0
1993-07-01	0
1993-10-01	0
1994-01-01	0
1994-04-01	0
1994-07-01	0
1994-10-01	201
1995-01-01	229
1995-04-01	236
1995-07-01	202
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	38
1998-01-01	38
1998-04-01	36
1998-07-01	37
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	57
2000-07-01	55
2000-10-01	52
2001-01-01	48
2001-04-01	0
2001-07-01	92
2001-10-01	130
2002-01-01	128
2002-04-01	1143
2002-07-01	1049
2002-10-01	1105
2003-01-01	1105
2003-04-01	104
2003-07-01	413
2003-10-01	403
2004-01-01	406
2004-04-01	401
2004-07-01	100
2004-10-01	98
2005-01-01	94
2005-04-01	144
2005-07-01	141
2005-10-01	51
2006-01-01	51
2006-04-01	0
2006-07-01	170
2006-10-01	552
2007-01-01	554
2007-04-01	3543
2007-07-01	3387
2007-10-01	3000
2008-01-01	3000
2008-04-01	0
2008-07-01	0
2008-10-01	55
2009-01-01	51
2009-04-01	52
2009-07-01	56
2009-10-01	0
2010-01-01	0
2010-04-01	0
2010-07-01	0
2010-10-01	0
2011-01-01	0
2011-04-01	0
2011-07-01	0
2011-10-01	0
2012-01-01	0
2012-04-01	1000
2012-07-01	1070
2012-10-01	1070
2013-01-01	1070
2013-04-01	1570
2013-07-01	2500
2013-10-01	2500
2014-01-01	2500
2014-04-01	1000
2014-07-01	0
2014-10-01	607
2015-01-01	538
2015-04-01	559
2015-07-01	560
2015-10-01	500
2016-01-01	500
2016-04-01	500
2016-07-01	500
2016-10-01	0
2017-01-01	0
2017-04-01	0
2017-07-01	0
2017-10-01	922
2018-01-01	954
2018-04-01	2406