Quarter US dollars 2004-12-31 125 2005-03-31 130 2005-06-30 104 2005-09-30 124 2005-12-31 129 2006-03-31 179 2006-06-30 155 2006-09-30 140 2006-12-31 178 2007-03-31 194 2007-06-30 169 2007-09-30 187 2007-12-31 187 2008-03-31 266 2008-06-30 139 2008-09-30 248 2008-12-31 191 2009-03-31 158 2009-06-30 178 2009-09-30 232 2009-12-31 184 2010-03-31 193 2010-06-30 217 2010-09-30 293 2010-12-31 308 2011-03-31 303 2011-06-30 355 2011-09-30 497 2011-12-31 343 2012-03-31 427 2012-06-30 529 2012-09-30 360 2012-12-31 470 2013-03-31 433 2013-06-30 507 2013-09-30 564 2013-12-31 423 2014-03-31 417 2014-06-30 402 2014-09-30 410 2014-12-31 245 2015-03-31 325 2015-06-30 282 2015-09-30 339 2015-12-31 196 2016-03-31 112 2016-06-30 137 2016-09-30 160 2016-12-31 155 2017-03-31 250 2017-06-30 1331 2017-09-30 1209 2017-12-31 1309 2018-03-31 1128 2018-06-30 1771 2018-09-30 1405 2018-12-31 909 2019-03-31 1119 2019-06-30 1018 2019-09-30 882 2019-12-31 1420 2020-03-31 1218 2020-06-30 989 2020-09-30 1012 2020-12-31 692 2021-03-31 1014 2021-06-30 1240 2021-09-30 1474 2021-12-31 1753 2022-03-31 1826 2022-06-30 1687 2022-09-30 905 2022-12-31 482 2023-03-31 246 2023-06-30 205 2023-09-30 215