Quarter US dollars 2004-12-31 73 2005-03-31 64 2005-06-30 75 2005-09-30 76 2005-12-31 82 2006-03-31 66 2006-06-30 126 2006-09-30 95 2006-12-31 129 2007-03-31 53 2007-06-30 86 2007-09-30 55 2007-12-31 96 2008-03-31 105 2008-06-30 135 2008-09-30 128 2008-12-31 137 2009-03-31 100 2009-06-30 114 2009-09-30 134 2009-12-31 108 2010-03-31 109 2010-06-30 1592 2010-09-30 1605 2010-12-31 1614 2011-03-31 1694 2011-06-30 1956 2011-09-30 1726 2011-12-31 1668 2012-03-31 1798 2012-06-30 1581 2012-09-30 1663 2012-12-31 1390 2013-03-31 1429 2013-06-30 1280 2013-09-30 562 2013-12-31 408 2014-03-31 407 2014-06-30 311 2014-09-30 60 2014-12-31 44 2015-03-31 21 2015-06-30 30 2015-09-30 23 2015-12-31 28 2016-03-31 32 2016-06-30 32 2016-09-30 31 2016-12-31 20 2017-03-31 25 2017-06-30 43 2017-09-30 46 2017-12-31 43 2018-03-31 25 2018-06-30 49 2018-09-30 37 2018-12-31 40 2019-03-31 34 2019-06-30 24 2019-09-30 28 2019-12-31 45 2020-03-31 32 2020-06-30 51 2020-09-30 45 2020-12-31 41 2021-03-31 47 2021-06-30 33 2021-09-30 40 2021-12-31 35 2022-03-31 36 2022-06-30 41 2022-09-30 26 2022-12-31 26 2023-03-31 32 2023-06-30 29 2023-09-30 55