Quarter US dollars 2004-12-31 582 2005-03-31 945 2005-06-30 574 2005-09-30 578 2005-12-31 805 2006-03-31 942 2006-06-30 1235 2006-09-30 729 2006-12-31 832 2007-03-31 1055 2007-06-30 917 2007-09-30 758 2007-12-31 794 2008-03-31 672 2008-06-30 697 2008-09-30 638 2008-12-31 1948 2009-03-31 3654 2009-06-30 3733 2009-09-30 1271 2009-12-31 1426 2010-03-31 1453 2010-06-30 2977 2010-09-30 2663 2010-12-31 2193 2011-03-31 1699