Quarter US dollars 2004-12-31 29 2005-03-31 26 2005-06-30 18 2005-09-30 41 2005-12-31 36 2006-03-31 94 2006-06-30 22 2006-09-30 11 2006-12-31 1194 2007-03-31 100 2007-06-30 98 2007-09-30 79 2007-12-31 605 2008-03-31 413 2008-06-30 1106 2008-09-30 928 2008-12-31 887 2009-03-31 989 2009-06-30 637 2009-09-30 729 2009-12-31 1195 2010-03-31 1095 2010-06-30 1234 2010-09-30 1884 2010-12-31 1384 2011-03-31 1339 2011-06-30 861 2011-09-30 888 2011-12-31 1589 2012-03-31 1673 2012-06-30 1316 2012-09-30 1258 2012-12-31 755 2013-03-31 791 2013-06-30 818 2013-09-30 1072 2013-12-31 778 2014-03-31 839 2014-06-30 1070 2014-09-30 840 2014-12-31 640 2015-03-31 615 2015-06-30 574 2015-09-30 497 2015-12-31 425 2016-03-31 480 2016-06-30 573 2016-09-30 565 2016-12-31 500 2017-03-31 573 2017-06-30 682 2017-09-30 672 2017-12-31 692 2018-03-31 763 2018-06-30 710 2018-09-30 724 2018-12-31 645 2019-03-31 615 2019-06-30 583 2019-09-30 700 2019-12-31 787 2020-03-31 855 2020-06-30 1007 2020-09-30 1047 2020-12-31 975 2021-03-31 810 2021-06-30 679 2021-09-30 553 2021-12-31 651 2022-03-31 771 2022-06-30 1066 2022-09-30 1156 2022-12-31 935 2023-03-31 804 2023-06-30 924 2023-09-30 1080