Quarter US dollars 2004-12-31 58 2005-03-31 62 2005-06-30 52 2005-09-30 41 2005-12-31 82 2006-03-31 64 2006-06-30 46 2006-09-30 52 2006-12-31 14 2007-03-31 35 2007-06-30 12 2007-09-30 51 2007-12-31 32 2008-03-31 286 2008-06-30 324 2008-09-30 80 2008-12-31 42 2009-03-31 166 2009-06-30 122 2009-09-30 136 2009-12-31 68 2010-03-31 67 2010-06-30 416 2010-09-30 452 2010-12-31 316 2011-03-31 64 2011-06-30 429 2011-09-30 740 2011-12-31 713 2012-03-31 670 2012-06-30 231 2012-09-30 244 2012-12-31 157 2013-03-31 205 2013-06-30 135 2013-09-30 189 2013-12-31 255 2014-03-31 122 2014-06-30 127 2014-09-30 107 2014-12-31 136 2015-03-31 291 2015-06-30 250 2015-09-30 171 2015-12-31 311 2016-03-31 298 2016-06-30 152 2016-09-30 158 2016-12-31 122 2017-03-31 114 2017-06-30 165 2017-09-30 339 2017-12-31 295 2018-03-31 208 2018-06-30 121 2018-09-30 417 2018-12-31 456 2019-03-31 171 2019-06-30 202 2019-09-30 330 2019-12-31 369 2020-03-31 298 2020-06-30 295 2020-09-30 323 2020-12-31 317 2021-03-31 330 2021-06-30 344 2021-09-30 1046 2021-12-31 915 2022-03-31 254 2022-06-30 489 2022-09-30 532 2022-12-31 483 2023-03-31 658 2023-06-30 652 2023-09-30 1132