Quarter US dollars 2004-12-31 65 2005-03-31 57 2005-06-30 125 2005-09-30 154 2005-12-31 118 2006-03-31 116 2006-06-30 54 2006-09-30 34 2006-12-31 29 2007-03-31 57 2007-06-30 46 2007-09-30 55 2007-12-31 52 2008-03-31 56 2008-06-30 16 2008-09-30 18 2008-12-31 42 2009-03-31 90 2009-06-30 87 2009-09-30 35 2009-12-31 57 2010-03-31 710 2010-06-30 549 2010-09-30 312 2010-12-31 277 2011-03-31 1230 2011-06-30 779 2011-09-30 304 2011-12-31 881 2012-03-31 344 2012-06-30 1492 2012-09-30 1554 2012-12-31 1266 2013-03-31 1128 2013-06-30 646 2013-09-30 662 2013-12-31 145 2014-03-31 365 2014-06-30 795 2014-09-30 1036 2014-12-31 1116 2015-03-31 625 2015-06-30 535 2015-09-30 192 2015-12-31 101 2016-03-31 165 2016-06-30 269 2016-09-30 434 2016-12-31 477 2017-03-31 298 2017-06-30 366 2017-09-30 157 2017-12-31 215 2018-03-31 166 2018-06-30 191 2018-09-30 163 2018-12-31 69 2019-03-31 94 2019-06-30 150 2019-09-30 113 2019-12-31 136 2020-03-31 112 2020-06-30 130 2020-09-30 132 2020-12-31 127 2021-03-31 185 2021-06-30 131 2021-09-30 140 2021-12-31 132 2022-03-31 82 2022-06-30 53 2022-09-30 167 2022-12-31 243 2023-03-31 179 2023-06-30 214 2023-09-30 76