Quarter US dollars 2004-12-31 676 2005-03-31 577 2005-06-30 477 2005-09-30 476 2005-12-31 548 2006-03-31 135 2006-06-30 146 2006-09-30 174 2006-12-31 180 2007-03-31 1489 2007-06-30 171 2007-09-30 88 2007-12-31 90 2008-03-31 203 2008-06-30 231 2008-09-30 210 2008-12-31 125 2009-03-31 128 2009-06-30 117 2009-09-30 152 2009-12-31 166 2010-03-31 158 2010-06-30 171 2010-09-30 181 2010-12-31 225 2011-03-31 224 2011-06-30 0 2011-09-30 285 2011-12-31 462 2012-03-31 438 2012-06-30 367 2012-09-30 344 2012-12-31 394 2013-03-31 339 2013-06-30 346 2013-09-30 2 2013-12-31 2 2014-03-31 0 2014-06-30 0 2014-09-30 0 2014-12-31 0 2015-03-31 0 2015-06-30 0 2015-09-30 38 2015-12-31 10 2016-03-31 6 2016-06-30 0 2016-09-30 1 2016-12-31 0 2017-03-31 0 2017-06-30 1 2017-09-30 1 2017-12-31 1 2018-03-31 0 2018-06-30 0 2018-09-30 0 2018-12-31 0 2019-03-31 0 2019-06-30 0 2019-09-30 0 2019-12-31 0 2020-03-31 0 2020-06-30 4 2020-09-30 0 2020-12-31 0 2021-03-31 0 2021-06-30 26 2021-09-30 16 2021-12-31 15 2022-03-31 14 2022-06-30 15 2022-09-30 14 2022-12-31 0 2023-03-31 3 2023-06-30 0 2023-09-30 0