Quarter US dollars 2004-12-31 549 2005-03-31 310 2005-06-30 330 2005-09-30 511 2005-12-31 443 2006-03-31 179 2006-06-30 494 2006-09-30 325 2006-12-31 166 2007-03-31 335 2007-06-30 421 2007-09-30 497 2007-12-31 289 2008-03-31 286 2008-06-30 414 2008-09-30 333 2008-12-31 279 2009-03-31 404 2009-06-30 1296 2009-09-30 1436 2009-12-31 483 2010-03-31 464 2010-06-30 672 2010-09-30 707 2010-12-31 715 2011-03-31 866 2011-06-30 1109 2011-09-30 879 2011-12-31 691 2012-03-31 687 2012-06-30 516 2012-09-30 425 2012-12-31 567 2013-03-31 469 2013-06-30 919 2013-09-30 1012 2013-12-31 516 2014-03-31 850 2014-06-30 1104 2014-09-30 1136 2014-12-31 888 2015-03-31 1053 2015-06-30 964 2015-09-30 892 2015-12-31 677 2016-03-31 861 2016-06-30 1003 2016-09-30 1452 2016-12-31 973 2017-03-31 762 2017-06-30 943 2017-09-30 863 2017-12-31 817 2018-03-31 452 2018-06-30 617 2018-09-30 699 2018-12-31 701 2019-03-31 573 2019-06-30 613 2019-09-30 554 2019-12-31 627 2020-03-31 609 2020-06-30 729 2020-09-30 725 2020-12-31 872 2021-03-31 705 2021-06-30 721 2021-09-30 614 2021-12-31 881 2022-03-31 788 2022-06-30 880 2022-09-30 1006 2022-12-31 989 2023-03-31 1110 2023-06-30 1352 2023-09-30 1676