Quarter US dollars 2004-12-31 755 2005-03-31 883 2005-06-30 864 2005-09-30 688 2005-12-31 664 2006-03-31 690 2006-06-30 786 2006-09-30 579 2006-12-31 466 2007-03-31 435 2007-06-30 321 2007-09-30 291 2007-12-31 251 2008-03-31 274 2008-06-30 229 2008-09-30 201 2008-12-31 184 2009-03-31 173 2009-06-30 163 2009-09-30 158 2009-12-31 142 2010-03-31 130 2010-06-30 106 2010-09-30 109 2010-12-31 97 2011-03-31 93 2011-06-30 80 2011-09-30 62 2011-12-31 66 2012-03-31 59 2012-06-30 53 2012-09-30 50 2012-12-31 39 2013-03-31 33 2013-06-30 29 2013-09-30 24 2013-12-31 21 2014-03-31 12 2014-06-30 7 2014-09-30 6 2014-12-31 5 2015-03-31 4 2015-06-30 5 2015-09-30 5 2015-12-31 0 2016-03-31 0 2016-06-30 0 2016-09-30 0 2016-12-31 0 2017-03-31 0 2017-06-30 0 2017-09-30 0 2017-12-31 0 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 0 2020-09-30 0 2020-12-31 0 2021-03-31 0 2021-06-30 0 2021-09-30 0 2021-12-31 0 2022-03-31 0 2022-06-30 0 2022-09-30 0 2022-12-31 0 2023-03-31 0 2023-06-30 0 2023-09-30 0