Quarter US dollars 2004-12-31 248 2005-03-31 119 2005-06-30 108 2005-09-30 113 2005-12-31 112 2006-03-31 125 2006-06-30 118 2006-09-30 135 2006-12-31 137 2007-03-31 143 2007-06-30 159 2007-09-30 167 2007-12-31 169 2008-03-31 185 2008-06-30 183 2008-09-30 86 2008-12-31 73 2009-03-31 64 2009-06-30 66 2009-09-30 75 2009-12-31 81 2010-03-31 97 2010-06-30 94 2010-09-30 101 2010-12-31 86 2011-03-31 88 2011-06-30 101 2011-09-30 101 2011-12-31 104 2012-03-31 113 2012-06-30 113 2012-09-30 123 2012-12-31 116 2013-03-31 128 2013-06-30 118 2013-09-30 118 2013-12-31 122 2014-03-31 157 2014-06-30 128 2014-09-30 144 2014-12-31 6 2015-03-31 150 2015-06-30 129 2015-09-30 115 2015-12-31 108 2016-03-31 144 2016-06-30 145 2016-09-30 140 2016-12-31 162 2017-03-31 170 2017-06-30 400 2017-09-30 431 2017-12-31 427 2018-03-31 453 2018-06-30 430 2018-09-30 411 2018-12-31 472 2019-03-31 487 2019-06-30 500 2019-09-30 483 2019-12-31 499 2020-03-31 542 2020-06-30 502 2020-09-30 505 2020-12-31 508 2021-03-31 603 2021-06-30 600 2021-09-30 661 2021-12-31 702 2022-03-31 732 2022-06-30 730 2022-09-30 745 2022-12-31 707 2023-03-31 734 2023-06-30 714 2023-09-30 707