Quarter US dollars 2004-12-31 42 2005-03-31 121 2005-06-30 38 2005-09-30 58 2005-12-31 62 2006-03-31 64 2006-06-30 48 2006-09-30 73 2006-12-31 96 2007-03-31 135 2007-06-30 132 2007-09-30 526 2007-12-31 613 2008-03-31 622 2008-06-30 939 2008-09-30 766 2008-12-31 427 2009-03-31 469 2009-06-30 445 2009-09-30 408 2009-12-31 294 2010-03-31 228 2010-06-30 373 2010-09-30 255 2010-12-31 230 2011-03-31 244 2011-06-30 95 2011-09-30 79 2011-12-31 83 2012-03-31 80 2012-06-30 119 2012-09-30 147 2012-12-31 294 2013-03-31 275 2013-06-30 258 2013-09-30 131 2013-12-31 76 2014-03-31 68 2014-06-30 89 2014-09-30 79 2014-12-31 52 2015-03-31 53 2015-06-30 57 2015-09-30 55 2015-12-31 52 2016-03-31 102 2016-06-30 99 2016-09-30 92 2016-12-31 86 2017-03-31 80 2017-06-30 71 2017-09-30 28 2017-12-31 26 2018-03-31 84 2018-06-30 42 2018-09-30 21 2018-12-31 18 2019-03-31 30 2019-06-30 28 2019-09-30 39 2019-12-31 86 2020-03-31 103 2020-06-30 129 2020-09-30 50 2020-12-31 37 2021-03-31 12 2021-06-30 40 2021-09-30 0 2021-12-31 0 2022-03-31 3 2022-06-30 1 2022-09-30 1 2022-12-31 4 2023-03-31 22 2023-06-30 20 2023-09-30 22