Quarter US dollars 2004-12-31 90 2005-03-31 129 2005-06-30 176 2005-09-30 301 2005-12-31 331 2006-03-31 378 2006-06-30 461 2006-09-30 334 2006-12-31 141 2007-03-31 124 2007-06-30 118 2007-09-30 0 2007-12-31 181 2008-03-31 642 2008-06-30 691 2008-09-30 583 2008-12-31 1862 2009-03-31 940 2009-06-30 512 2009-09-30 453 2009-12-31 392 2010-03-31 513 2010-06-30 1029 2010-09-30 607 2010-12-31 950 2011-03-31 718 2011-06-30 954 2011-09-30 795 2011-12-31 690 2012-03-31 527 2012-06-30 424 2012-09-30 544 2012-12-31 480 2013-03-31 536 2013-06-30 585 2013-09-30 912 2013-12-31 864 2014-03-31 552 2014-06-30 744 2014-09-30 493 2014-12-31 543 2015-03-31 610 2015-06-30 585 2015-09-30 948 2015-12-31 421 2016-03-31 380 2016-06-30 324 2016-09-30 704 2016-12-31 251 2017-03-31 230 2017-06-30 168 2017-09-30 127 2017-12-31 82 2018-03-31 69 2018-06-30 129 2018-09-30 133 2018-12-31 97 2019-03-31 90 2019-06-30 116 2019-09-30 111 2019-12-31 141 2020-03-31 956 2020-06-30 232 2020-09-30 220 2020-12-31 243 2021-03-31 181 2021-06-30 148 2021-09-30 108 2021-12-31 100 2022-03-31 79 2022-06-30 129 2022-09-30 192 2022-12-31 167 2023-03-31 40 2023-06-30 89 2023-09-30 131