Quarter US dollars 2004-12-31 69 2005-03-31 66 2005-06-30 56 2005-09-30 117 2005-12-31 328 2006-03-31 295 2006-06-30 309 2006-09-30 284 2006-12-31 370 2007-03-31 553 2007-06-30 632 2007-09-30 479 2007-12-31 605 2008-03-31 576 2008-06-30 193 2008-09-30 576 2008-12-31 519 2009-03-31 507 2009-06-30 515 2009-09-30 552 2009-12-31 564 2010-03-31 523 2010-06-30 679 2010-09-30 670 2010-12-31 535 2011-03-31 507 2011-06-30 698 2011-09-30 757 2011-12-31 798 2012-03-31 855 2012-06-30 725 2012-09-30 1084 2012-12-31 975 2013-03-31 1013 2013-06-30 852 2013-09-30 622 2013-12-31 749 2014-03-31 332 2014-06-30 280 2014-09-30 198 2014-12-31 175 2015-03-31 131 2015-06-30 192 2015-09-30 171 2015-12-31 101 2016-03-31 79 2016-06-30 283 2016-09-30 229 2016-12-31 229 2017-03-31 339 2017-06-30 184 2017-09-30 118 2017-12-31 362 2018-03-31 219 2018-06-30 164 2018-09-30 205 2018-12-31 419 2019-03-31 374 2019-06-30 402 2019-09-30 378 2019-12-31 230 2020-03-31 215 2020-06-30 141 2020-09-30 156 2020-12-31 138 2021-03-31 97 2021-06-30 124 2021-09-30 123 2021-12-31 128 2022-03-31 133 2022-06-30 104 2022-09-30 101 2022-12-31 105 2023-03-31 101 2023-06-30 81 2023-09-30 88