Quarter US dollars 2004-12-31 157 2005-03-31 130 2005-06-30 43 2005-09-30 147 2005-12-31 86 2006-03-31 99 2006-06-30 80 2006-09-30 73 2006-12-31 72 2007-03-31 73 2007-06-30 98 2007-09-30 124 2007-12-31 96 2008-03-31 91 2008-06-30 92 2008-09-30 189 2008-12-31 95 2009-03-31 99 2009-06-30 94 2009-09-30 99 2009-12-31 181 2010-03-31 108 2010-06-30 444 2010-09-30 616 2010-12-31 592 2011-03-31 319 2011-06-30 538 2011-09-30 885 2011-12-31 509 2012-03-31 264 2012-06-30 759 2012-09-30 615 2012-12-31 703 2013-03-31 108 2013-06-30 329 2013-09-30 675 2013-12-31 782 2014-03-31 547 2014-06-30 562 2014-09-30 721 2014-12-31 509 2015-03-31 537 2015-06-30 551 2015-09-30 457 2015-12-31 366 2016-03-31 188 2016-06-30 281 2016-09-30 183 2016-12-31 260 2017-03-31 298 2017-06-30 387 2017-09-30 299 2017-12-31 216 2018-03-31 361 2018-06-30 238 2018-09-30 378 2018-12-31 126 2019-03-31 228 2019-06-30 195 2019-09-30 326 2019-12-31 293 2020-03-31 571 2020-06-30 219 2020-09-30 289 2020-12-31 246 2021-03-31 186 2021-06-30 352 2021-09-30 494 2021-12-31 1507 2022-03-31 2388 2022-06-30 974 2022-09-30 1530 2022-12-31 1361 2023-03-31 1417 2023-06-30 2431 2023-09-30 2578