Quarter US dollars 2004-12-31 90 2005-03-31 204 2005-06-30 122 2005-09-30 94 2005-12-31 136 2006-03-31 118 2006-06-30 120 2006-09-30 116 2006-12-31 55 2007-03-31 69 2007-06-30 62 2007-09-30 67 2007-12-31 54 2008-03-31 81 2008-06-30 70 2008-09-30 82 2008-12-31 50 2009-03-31 52 2009-06-30 31 2009-09-30 32 2009-12-31 44 2010-03-31 61 2010-06-30 21 2010-09-30 20 2010-12-31 283 2011-03-31 16 2011-06-30 27 2011-09-30 33 2011-12-31 32 2012-03-31 27 2012-06-30 20 2012-09-30 26 2012-12-31 23 2013-03-31 47 2013-06-30 42 2013-09-30 589 2013-12-31 721 2014-03-31 52 2014-06-30 79 2014-09-30 136 2014-12-31 123 2015-03-31 147 2015-06-30 239 2015-09-30 282 2015-12-31 304 2016-03-31 231 2016-06-30 144 2016-09-30 117 2016-12-31 108 2017-03-31 119 2017-06-30 170 2017-09-30 133 2017-12-31 158 2018-03-31 233 2018-06-30 166 2018-09-30 163 2018-12-31 157 2019-03-31 203 2019-06-30 146 2019-09-30 148 2019-12-31 78 2020-03-31 136 2020-06-30 89 2020-09-30 12 2020-12-31 8 2021-03-31 6 2021-06-30 1 2021-09-30 8 2021-12-31 1 2022-03-31 1 2022-06-30 38 2022-09-30 200 2022-12-31 161 2023-03-31 64 2023-06-30 64 2023-09-30 78