Quarter US dollars 2004-12-31 541 2005-03-31 645 2005-06-30 1002 2005-09-30 677 2005-12-31 745 2006-03-31 465 2006-06-30 758 2006-09-30 878 2006-12-31 902 2007-03-31 816 2007-06-30 853 2007-09-30 937 2007-12-31 1039 2008-03-31 1294 2008-06-30 1351 2008-09-30 1205 2008-12-31 1196 2009-03-31 1141 2009-06-30 1047 2009-09-30 1332 2009-12-31 1710 2010-03-31 1671 2010-06-30 1656 2010-09-30 1714 2010-12-31 2013 2011-03-31 2230 2011-06-30 466 2011-09-30 198 2011-12-31 144 2012-03-31 195 2012-06-30 174 2012-09-30 179 2012-12-31 131 2013-03-31 165 2013-06-30 120 2013-09-30 125 2013-12-31 121 2014-03-31 290 2014-06-30 255 2014-09-30 258 2014-12-31 265 2015-03-31 273 2015-06-30 253 2015-09-30 188 2015-12-31 159 2016-03-31 139 2016-06-30 142 2016-09-30 117 2016-12-31 98 2017-03-31 91 2017-06-30 203 2017-09-30 78 2017-12-31 118 2018-03-31 118 2018-06-30 94 2018-09-30 977 2018-12-31 901 2019-03-31 56 2019-06-30 107 2019-09-30 117 2019-12-31 137 2020-03-31 108 2020-06-30 110 2020-09-30 92 2020-12-31 119 2021-03-31 73 2021-06-30 76 2021-09-30 71 2021-12-31 74 2022-03-31 97 2022-06-30 96 2022-09-30 123 2022-12-31 95 2023-03-31 164 2023-06-30 153 2023-09-30 115