Quarter US dollars 2004-12-31 132 2005-03-31 204 2005-06-30 68 2005-09-30 129 2005-12-31 101 2006-03-31 80 2006-06-30 54 2006-09-30 64 2006-12-31 12 2007-03-31 133 2007-06-30 88 2007-09-30 175 2007-12-31 271 2008-03-31 608 2008-06-30 599 2008-09-30 522 2008-12-31 168 2009-03-31 34 2009-06-30 15 2009-09-30 35 2009-12-31 6 2010-03-31 11 2010-06-30 1 2010-09-30 2 2010-12-31 114 2011-03-31 6 2011-06-30 26 2011-09-30 199 2011-12-31 340 2012-03-31 526 2012-06-30 270 2012-09-30 313 2012-12-31 407 2013-03-31 736 2013-06-30 507 2013-09-30 428 2013-12-31 334 2014-03-31 2 2014-06-30 258 2014-09-30 44 2014-12-31 25 2015-03-31 113 2015-06-30 423 2015-09-30 321 2015-12-31 304 2016-03-31 125 2016-06-30 979 2016-09-30 131 2016-12-31 133 2017-03-31 231 2017-06-30 227 2017-09-30 212 2017-12-31 178 2018-03-31 178 2018-06-30 139 2018-09-30 245 2018-12-31 163 2019-03-31 155 2019-06-30 131 2019-09-30 134 2019-12-31 120 2020-03-31 43 2020-06-30 41 2020-09-30 138 2020-12-31 186 2021-03-31 217 2021-06-30 298 2021-09-30 190 2021-12-31 248 2022-03-31 159 2022-06-30 247 2022-09-30 239 2022-12-31 337 2023-03-31 116 2023-06-30 78 2023-09-30 140