Quarter US dollars 2004-12-31 394 2005-03-31 671 2005-06-30 604 2005-09-30 780 2005-12-31 649 2006-03-31 985 2006-06-30 830 2006-09-30 1659 2006-12-31 906 2007-03-31 965 2007-06-30 -78 2007-09-30 566 2007-12-31 1567 2008-03-31 316 2008-06-30 882 2008-09-30 741 2008-12-31 474 2009-03-31 800 2009-06-30 1296 2009-09-30 1457 2009-12-31 895 2010-03-31 740 2010-06-30 1794 2010-09-30 3729 2010-12-31 2693 2011-03-31 5352 2011-06-30 5642 2011-09-30 3268 2011-12-31 2720 2012-03-31 4243 2012-06-30 2980 2012-09-30 3143 2012-12-31 2674 2013-03-31 3268 2013-06-30 2709 2013-09-30 2278 2013-12-31 4577 2014-03-31 1094 2014-06-30 1392 2014-09-30 1492 2014-12-31 1754 2015-03-31 1360 2015-06-30 3033 2015-09-30 3046 2015-12-31 2507 2016-03-31 1114 2016-06-30 7645 2016-09-30 7310 2016-12-31 7041 2017-03-31 7585 2017-06-30 4168 2017-09-30 2426 2017-12-31 4572 2018-03-31 5137 2018-06-30 886 2018-09-30 871 2018-12-31 462 2019-03-31 865 2019-06-30 588 2019-09-30 808 2019-12-31 775 2020-03-31 554 2020-06-30 681 2020-09-30 606 2020-12-31 1245 2021-03-31 948 2021-06-30 890 2021-09-30 756 2021-12-31 748 2022-03-31 650 2022-06-30 659 2022-09-30 430 2022-12-31 583 2023-03-31 655 2023-06-30 905 2023-09-30 3805