Quarter US dollars 1999-09-30 0 1999-12-31 2 2000-03-31 2 2000-06-30 2 2000-09-30 1 2000-12-31 1 2001-03-31 1 2001-06-30 1 2001-09-30 1 2001-12-31 1 2002-03-31 28 2002-06-30 2 2002-09-30 31 2002-12-31 23 2003-03-31 41 2003-06-30 53 2003-09-30 52 2003-12-31 32 2004-03-31 20 2004-06-30 34 2004-09-30 31