Quarter US dollars 2004-12-31 84 2005-03-31 76 2005-06-30 99 2005-09-30 322 2005-12-31 94 2006-03-31 109 2006-06-30 237 2006-09-30 310 2006-12-31 186 2007-03-31 275 2007-06-30 411 2007-09-30 220 2007-12-31 342 2008-03-31 415 2008-06-30 380 2008-09-30 219 2008-12-31 227 2009-03-31 211 2009-06-30 270 2009-09-30 253 2009-12-31 176 2010-03-31 253 2010-06-30 82 2010-09-30 347 2010-12-31 301 2011-03-31 197 2011-06-30 315 2011-09-30 254 2011-12-31 161 2012-03-31 396 2012-06-30 191 2012-09-30 173 2012-12-31 179 2013-03-31 24 2013-06-30 77 2013-09-30 94 2013-12-31 53 2014-03-31 52 2014-06-30 82 2014-09-30 34 2014-12-31 33 2015-03-31 148 2015-06-30 112 2015-09-30 133 2015-12-31 105 2016-03-31 247 2016-06-30 228 2016-09-30 156 2016-12-31 37 2017-03-31 246 2017-06-30 238 2017-09-30 284 2017-12-31 336 2018-03-31 582 2018-06-30 267 2018-09-30 220 2018-12-31 75 2019-03-31 201 2019-06-30 109 2019-09-30 169 2019-12-31 165 2020-03-31 79 2020-06-30 79 2020-09-30 44 2020-12-31 100 2021-03-31 132 2021-06-30 156 2021-09-30 70 2021-12-31 137 2022-03-31 58 2022-06-30 59 2022-09-30 83 2022-12-31 116 2023-03-31 182 2023-06-30 102 2023-09-30 55