Quarter US dollars 2004-12-31 184 2005-03-31 174 2005-06-30 201 2005-09-30 1594 2005-12-31 172 2006-03-31 555 2006-06-30 289 2006-09-30 245 2006-12-31 309 2007-03-31 2695 2007-06-30 315 2007-09-30 332 2007-12-31 546 2008-03-31 594 2008-06-30 663 2008-09-30 707 2008-12-31 867 2009-03-31 671 2009-06-30 594 2009-09-30 595 2009-12-31 525 2010-03-31 654 2010-06-30 1263 2010-09-30 1612 2010-12-31 1108 2011-03-31 960 2011-06-30 938 2011-09-30 1436 2011-12-31 1030 2012-03-31 999 2012-06-30 715 2012-09-30 1922 2012-12-31 2338 2013-03-31 2034 2013-06-30 2001 2013-09-30 2131 2013-12-31 1114 2014-03-31 1881 2014-06-30 1443 2014-09-30 1448 2014-12-31 1158 2015-03-31 1114 2015-06-30 986 2015-09-30 677 2015-12-31 651 2016-03-31 611 2016-06-30 529 2016-09-30 868 2016-12-31 736 2017-03-31 1037 2017-06-30 1079 2017-09-30 719 2017-12-31 727 2018-03-31 406 2018-06-30 706 2018-09-30 1604 2018-12-31 227 2019-03-31 658 2019-06-30 686 2019-09-30 726 2019-12-31 137 2020-03-31 231 2020-06-30 127 2020-09-30 116 2020-12-31 156 2021-03-31 152 2021-06-30 162 2021-09-30 105 2021-12-31 209 2022-03-31 37 2022-06-30 15 2022-09-30 10 2022-12-31 4 2023-03-31 4 2023-06-30 11 2023-09-30 5