Quarter US dollars 2004-12-31 58 2005-03-31 64 2005-06-30 73 2005-09-30 76 2005-12-31 94 2006-03-31 94 2006-06-30 104 2006-09-30 103 2006-12-31 96 2007-03-31 92 2007-06-30 86 2007-09-30 88 2007-12-31 88 2008-03-31 81 2008-06-30 101 2008-09-30 73 2008-12-31 47 2009-03-31 53 2009-06-30 49 2009-09-30 48 2009-12-31 37 2010-03-31 27 2010-06-30 33 2010-09-30 148 2010-12-31 158 2011-03-31 252 2011-06-30 212 2011-09-30 118 2011-12-31 111 2012-03-31 107 2012-06-30 185 2012-09-30 182 2012-12-31 173 2013-03-31 178 2013-06-30 171 2013-09-30 172 2013-12-31 164 2014-03-31 160 2014-06-30 138 2014-09-30 110 2014-12-31 100 2015-03-31 180 2015-06-30 203 2015-09-30 114 2015-12-31 202 2016-03-31 263 2016-06-30 152 2016-09-30 125 2016-12-31 127 2017-03-31 145 2017-06-30 260 2017-09-30 232 2017-12-31 427 2018-03-31 467 2018-06-30 456 2018-09-30 498 2018-12-31 481 2019-03-31 439 2019-06-30 536 2019-09-30 477 2019-12-31 491 2020-03-31 404 2020-06-30 571 2020-09-30 632 2020-12-31 646 2021-03-31 602 2021-06-30 562 2021-09-30 413 2021-12-31 536 2022-03-31 969 2022-06-30 780 2022-09-30 788 2022-12-31 770 2023-03-31 1017 2023-06-30 886 2023-09-30 871