Quarter US dollars 2004-12-31 388 2005-03-31 526 2005-06-30 635 2005-09-30 815 2005-12-31 694 2006-03-31 1065 2006-06-30 912 2006-09-30 1113 2006-12-31 1025 2007-03-31 1173 2007-06-30 124 2007-09-30 760 2007-12-31 1662 2008-03-31 276 2008-06-30 330 2008-09-30 333 2008-12-31 364 2009-03-31 729 2009-06-30 1093 2009-09-30 501 2009-12-31 100 2010-03-31 306 2010-06-30 88 2010-09-30 533 2010-12-31 191 2011-03-31 1448 2011-06-30 1562 2011-09-30 276 2011-12-31 461 2012-03-31 1331 2012-06-30 435 2012-09-30 573 2012-12-31 474 2013-03-31 554 2013-06-30 479 2013-09-30 277 2013-12-31 370 2014-03-31 497 2014-06-30 800 2014-09-30 697 2014-12-31 537 2015-03-31 684 2015-06-30 1088 2015-09-30 686 2015-12-31 777 2016-03-31 680 2016-06-30 839 2016-09-30 548 2016-12-31 595 2017-03-31 463 2017-06-30 430 2017-09-30 160 2017-12-31 313 2018-03-31 383 2018-06-30 203 2018-09-30 198 2018-12-31 149 2019-03-31 584 2019-06-30 513 2019-09-30 367 2019-12-31 370 2020-03-31 260 2020-06-30 174 2020-09-30 149 2020-12-31 240 2021-03-31 215 2021-06-30 137 2021-09-30 98 2021-12-31 94 2022-03-31 22 2022-06-30 13 2022-09-30 -13 2022-12-31 2 2023-03-31 93 2023-06-30 260 2023-09-30 41