Quarter US dollars 2004-12-31 253 2005-03-31 43 2005-06-30 233 2005-09-30 242 2005-12-31 189 2006-03-31 206 2006-06-30 385 2006-09-30 112 2006-12-31 16 2007-03-31 949 2007-06-30 1186 2007-09-30 1247 2007-12-31 611 2008-03-31 592 2008-06-30 947 2008-09-30 789 2008-12-31 1024 2009-03-31 1794 2009-06-30 576 2009-09-30 1062 2009-12-31 3662 2010-03-31 5325 2010-06-30 1635 2010-09-30 1081 2010-12-31 916 2011-03-31 1252 2011-06-30 981 2011-09-30 1053 2011-12-31 3202 2012-03-31 3859 2012-06-30 1835 2012-09-30 1114 2012-12-31 3268 2013-03-31 3235 2013-06-30 549 2013-09-30 685 2013-12-31 509 2014-03-31 749 2014-06-30 545 2014-09-30 1179 2014-12-31 1280 2015-03-31 1592 2015-06-30 1977 2015-09-30 901 2015-12-31 600 2016-03-31 2019 2016-06-30 2441 2016-09-30 1220 2016-12-31 1731 2017-03-31 1482 2017-06-30 1399 2017-09-30 598 2017-12-31 897 2018-03-31 3404 2018-06-30 3488 2018-09-30 1532 2018-12-31 1010 2019-03-31 1686 2019-06-30 1790 2019-09-30 1530 2019-12-31 2658 2020-03-31 2409 2020-06-30 3113 2020-09-30 2691 2020-12-31 3702 2021-03-31 3529 2021-06-30 2020 2021-09-30 1948 2021-12-31 3183 2022-03-31 4661 2022-06-30 4132 2022-09-30 3914 2022-12-31 2327 2023-03-31 3026 2023-06-30 4874 2023-09-30 3915