Quarter US dollars 2004-12-31 132 2005-03-31 43 2005-06-30 79 2005-09-30 108 2005-12-31 21 2006-03-31 57 2006-06-30 31 2006-09-30 6 2006-12-31 10 2007-03-31 6 2007-06-30 52 2007-09-30 59 2007-12-31 10 2008-03-31 89 2008-06-30 64 2008-09-30 46 2008-12-31 56 2009-03-31 46 2009-06-30 44 2009-09-30 16 2009-12-31 36 2010-03-31 15 2010-06-30 12 2010-09-30 55 2010-12-31 13 2011-03-31 351 2011-06-30 39 2011-09-30 9 2011-12-31 6 2012-03-31 14 2012-06-30 9 2012-09-30 23 2012-12-31 116 2013-03-31 43 2013-06-30 100 2013-09-30 117 2013-12-31 18 2014-03-31 28 2014-06-30 14 2014-09-30 26 2014-12-31 17 2015-03-31 1 2015-06-30 11 2015-09-30 5 2015-12-31 9 2016-03-31 229 2016-06-30 17 2016-09-30 6 2016-12-31 21 2017-03-31 5 2017-06-30 8 2017-09-30 16 2017-12-31 22 2018-03-31 3 2018-06-30 7 2018-09-30 17 2018-12-31 5 2019-03-31 60 2019-06-30 135 2019-09-30 89 2019-12-31 20 2020-03-31 24 2020-06-30 83 2020-09-30 39 2020-12-31 26 2021-03-31 18 2021-06-30 62 2021-09-30 12 2021-12-31 4 2022-03-31 32 2022-06-30 57 2022-09-30 72 2022-12-31 65 2023-03-31 37 2023-06-30 30 2023-09-30 80