Quarter US dollars 2004-12-31 44 2005-03-31 96 2005-06-30 43 2005-09-30 51 2005-12-31 36 2006-03-31 9 2006-06-30 3 2006-09-30 6 2006-12-31 31 2007-03-31 14 2007-06-30 0 2007-09-30 0 2007-12-31 0 2008-03-31 0 2008-06-30 0 2008-09-30 27 2008-12-31 26 2009-03-31 26 2009-06-30 3 2009-09-30 2 2009-12-31 16 2010-03-31 47 2010-06-30 49 2010-09-30 8 2010-12-31 5 2011-03-31 22 2011-06-30 37 2011-09-30 28 2011-12-31 29 2012-03-31 27 2012-06-30 2 2012-09-30 2 2012-12-31 3 2013-03-31 0 2013-06-30 5 2013-09-30 3 2013-12-31 10 2014-03-31 12 2014-06-30 41 2014-09-30 8 2014-12-31 41 2015-03-31 71 2015-06-30 8 2015-09-30 8 2015-12-31 4 2016-03-31 6 2016-06-30 4 2016-09-30 5 2016-12-31 30 2017-03-31 28 2017-06-30 30 2017-09-30 34 2017-12-31 30 2018-03-31 63 2018-06-30 77 2018-09-30 77 2018-12-31 29 2019-03-31 29 2019-06-30 71 2019-09-30 70 2019-12-31 102 2020-03-31 92 2020-06-30 74 2020-09-30 66 2020-12-31 15 2021-03-31 18 2021-06-30 12 2021-09-30 16 2021-12-31 13 2022-03-31 11 2022-06-30 17 2022-09-30 20 2022-12-31 15 2023-03-31 12 2023-06-30 12 2023-09-30 11