Quarter US dollars 2004-12-31 171 2005-03-31 102 2005-06-30 122 2005-09-30 164 2005-12-31 146 2006-03-31 179 2006-06-30 294 2006-09-30 305 2006-12-31 82 2007-03-31 106 2007-06-30 355 2007-09-30 436 2007-12-31 243 2008-03-31 262 2008-06-30 155 2008-09-30 424 2008-12-31 346 2009-03-31 150 2009-06-30 193 2009-09-30 329 2009-12-31 656 2010-03-31 444 2010-06-30 497 2010-09-30 659 2010-12-31 496 2011-03-31 975 2011-06-30 1386 2011-09-30 1217 2011-12-31 1053 2012-03-31 877 2012-06-30 1711 2012-09-30 1198 2012-12-31 244 2013-03-31 255 2013-06-30 705 2013-09-30 700 2013-12-31 651 2014-03-31 479 2014-06-30 380 2014-09-30 537 2014-12-31 542 2015-03-31 235 2015-06-30 304 2015-09-30 294 2015-12-31 370 2016-03-31 105 2016-06-30 340 2016-09-30 347 2016-12-31 48 2017-03-31 11 2017-06-30 109 2017-09-30 247 2017-12-31 336 2018-03-31 160 2018-06-30 90 2018-09-30 21 2018-12-31 137 2019-03-31 373 2019-06-30 323 2019-09-30 402 2019-12-31 365 2020-03-31 175 2020-06-30 159 2020-09-30 133 2020-12-31 66 2021-03-31 208 2021-06-30 202 2021-09-30 49 2021-12-31 197 2022-03-31 218 2022-06-30 485 2022-09-30 693 2022-12-31 755 2023-03-31 427 2023-06-30 337 2023-09-30 752