Quarter US dollars 2004-12-31 36 2005-03-31 42 2005-06-30 25 2005-09-30 73 2005-12-31 72 2006-03-31 66 2006-06-30 72 2006-09-30 65 2006-12-31 57 2007-03-31 65 2007-06-30 84 2007-09-30 43 2007-12-31 78 2008-03-31 70 2008-06-30 78 2008-09-30 148 2008-12-31 92 2009-03-31 118 2009-06-30 91 2009-09-30 70 2009-12-31 171 2010-03-31 111 2010-06-30 437 2010-09-30 262 2010-12-31 244 2011-03-31 337 2011-06-30 538 2011-09-30 527 2011-12-31 513 2012-03-31 265 2012-06-30 411 2012-09-30 257 2012-12-31 348 2013-03-31 109 2013-06-30 332 2013-09-30 335 2013-12-31 456 2014-03-31 220 2014-06-30 239 2014-09-30 413 2014-12-31 201 2015-03-31 273 2015-06-30 260 2015-09-30 159 2015-12-31 290 2016-03-31 219 2016-06-30 306 2016-09-30 216 2016-12-31 354 2017-03-31 328 2017-06-30 404 2017-09-30 319 2017-12-31 238 2018-03-31 362 2018-06-30 257 2018-09-30 396 2018-12-31 135 2019-03-31 210 2019-06-30 197 2019-09-30 329 2019-12-31 304 2020-03-31 573 2020-06-30 231 2020-09-30 289 2020-12-31 246 2021-03-31 186 2021-06-30 352 2021-09-30 473 2021-12-31 1438 2022-03-31 2274 2022-06-30 968 2022-09-30 1525 2022-12-31 1360 2023-03-31 1415 2023-06-30 2405 2023-09-30 2576