Quarter US dollars 2004-12-31 564 2005-03-31 665 2005-06-30 1018 2005-09-30 688 2005-12-31 754 2006-03-31 470 2006-06-30 758 2006-09-30 884 2006-12-31 902 2007-03-31 816 2007-06-30 855 2007-09-30 937 2007-12-31 1037 2008-03-31 1294 2008-06-30 1361 2008-09-30 1214 2008-12-31 1205 2009-03-31 1141 2009-06-30 1062 2009-09-30 1353 2009-12-31 1747 2010-03-31 1685 2010-06-30 1680 2010-09-30 1730 2010-12-31 2032 2011-03-31 2231 2011-06-30 185 2011-09-30 218 2011-12-31 156 2012-03-31 203 2012-06-30 177 2012-09-30 182 2012-12-31 137 2013-03-31 172 2013-06-30 127 2013-09-30 136 2013-12-31 126 2014-03-31 323 2014-06-30 309 2014-09-30 271 2014-12-31 318 2015-03-31 324 2015-06-30 293 2015-09-30 200 2015-12-31 166 2016-03-31 144 2016-06-30 146 2016-09-30 144 2016-12-31 100 2017-03-31 91 2017-06-30 78 2017-09-30 82 2017-12-31 120 2018-03-31 121 2018-06-30 98 2018-09-30 982 2018-12-31 903 2019-03-31 57 2019-06-30 107 2019-09-30 116 2019-12-31 137 2020-03-31 108 2020-06-30 109 2020-09-30 90 2020-12-31 117 2021-03-31 72 2021-06-30 65 2021-09-30 59 2021-12-31 63 2022-03-31 97 2022-06-30 86 2022-09-30 115 2022-12-31 87 2023-03-31 154 2023-06-30 143 2023-09-30 106