Quarter US dollars 2004-12-31 109 2005-03-31 202 2005-06-30 84 2005-09-30 57 2005-12-31 76 2006-03-31 92 2006-06-30 37 2006-09-30 86 2006-12-31 104 2007-03-31 122 2007-06-30 253 2007-09-30 395 2007-12-31 360 2008-03-31 535 2008-06-30 179 2008-09-30 196 2008-12-31 106 2009-03-31 129 2009-06-30 125 2009-09-30 88 2009-12-31 182 2010-03-31 6 2010-06-30 162 2010-09-30 184 2010-12-31 146 2011-03-31 2 2011-06-30 302 2011-09-30 210 2011-12-31 122 2012-03-31 409 2012-06-30 215 2012-09-30 208 2012-12-31 81 2013-03-31 94 2013-06-30 105 2013-09-30 91 2013-12-31 152 2014-03-31 268 2014-06-30 99 2014-09-30 358 2014-12-31 120 2015-03-31 319 2015-06-30 132 2015-09-30 769 2015-12-31 219 2016-03-31 306 2016-06-30 371 2016-09-30 531 2016-12-31 543 2017-03-31 163 2017-06-30 244 2017-09-30 444 2017-12-31 289 2018-03-31 215 2018-06-30 198 2018-09-30 665 2018-12-31 207 2019-03-31 177 2019-06-30 102 2019-09-30 382 2019-12-31 235 2020-03-31 176 2020-06-30 30 2020-09-30 0 2020-12-31 1 2021-03-31 33 2021-06-30 135 2021-09-30 205 2021-12-31 208 2022-03-31 209 2022-06-30 78 2022-09-30 123 2022-12-31 179 2023-03-31 184 2023-06-30 112 2023-09-30 0