Quarter	Millions of US Dollars
1996-01-01	50
1996-04-01	50
1996-07-01	50
1996-10-01	50
1997-01-01	50
1997-04-01	50
1997-07-01	50
1997-10-01	50
1998-01-01	50
1998-04-01	50
1998-07-01	50
1998-10-01	50
1999-01-01	50
1999-04-01	50
1999-07-01	57
1999-10-01	57
2000-01-01	46
2000-04-01	46
2000-07-01	46
2000-10-01	46
2001-01-01	46
2001-04-01	46
2001-07-01	46
2001-10-01	46
2002-01-01	46
2002-04-01	46
2002-07-01	46
2002-10-01	46
2003-01-01	46
2003-04-01	46
2003-07-01	46
2003-10-01	46
2004-01-01	46
2004-04-01	46
2004-07-01	46
2004-10-01	46
2005-01-01	46
2005-04-01	46
2005-07-01	46
2005-10-01	46
2006-01-01	46
2006-04-01	46