Quarter US dollars 2004-12-31 73 2005-03-31 106 2005-06-30 91 2005-09-30 27 2005-12-31 72 2006-03-31 71 2006-06-30 118 2006-09-30 148 2006-12-31 155 2007-03-31 149 2007-06-30 152 2007-09-30 204 2007-12-31 139 2008-03-31 139 2008-06-30 135 2008-09-30 128 2008-12-31 105 2009-03-31 64 2009-06-30 64 2009-09-30 64 2009-12-31 61 2010-03-31 83 2010-06-30 79 2010-09-30 74 2010-12-31 78 2011-03-31 46 2011-06-30 128 2011-09-30 31 2011-12-31 31 2012-03-31 35 2012-06-30 35 2012-09-30 32 2012-12-31 23 2013-03-31 21 2013-06-30 18 2013-09-30 18 2013-12-31 13 2014-03-31 12 2014-06-30 5 2014-09-30 8 2014-12-31 27 2015-03-31 16 2015-06-30 14 2015-09-30 12 2015-12-31 10 2016-03-31 7 2016-06-30 7 2016-09-30 6 2016-12-31 5 2017-03-31 5 2017-06-30 5 2017-09-30 5 2017-12-31 5 2018-03-31 4 2018-06-30 4 2018-09-30 4 2018-12-31 4 2019-03-31 134 2019-06-30 4 2019-09-30 4 2019-12-31 4 2020-03-31 4 2020-06-30 2 2020-09-30 3 2020-12-31 1 2021-03-31 1 2021-06-30 1 2021-09-30 1 2021-12-31 1 2022-03-31 1 2022-06-30 104 2022-09-30 0 2022-12-31 0 2023-03-31 0 2023-06-30 0 2023-09-30 0