Quarter US dollars 2004-12-31 46 2005-03-31 2 2005-06-30 5 2005-09-30 19 2005-12-31 50 2006-03-31 75 2006-06-30 63 2006-09-30 47 2006-12-31 53 2007-03-31 49 2007-06-30 52 2007-09-30 53 2007-12-31 58 2008-03-31 175 2008-06-30 171 2008-09-30 178 2008-12-31 184 2009-03-31 67 2009-06-30 15 2009-09-30 19 2009-12-31 47 2010-03-31 44 2010-06-30 39 2010-09-30 27 2010-12-31 42 2011-03-31 69 2011-06-30 80 2011-09-30 97 2011-12-31 71 2012-03-31 62 2012-06-30 47 2012-09-30 61 2012-12-31 57 2013-03-31 49 2013-06-30 39 2013-09-30 26 2013-12-31 48 2014-03-31 30 2014-06-30 31 2014-09-30 28 2014-12-31 20 2015-03-31 21 2015-06-30 14 2015-09-30 6 2015-12-31 4 2016-03-31 6 2016-06-30 7 2016-09-30 6 2016-12-31 11 2017-03-31 13 2017-06-30 26 2017-09-30 31 2017-12-31 22 2018-03-31 46 2018-06-30 38 2018-09-30 44 2018-12-31 47 2019-03-31 31 2019-06-30 22 2019-09-30 26 2019-12-31 7 2020-03-31 14 2020-06-30 14 2020-09-30 34 2020-12-31 30 2021-03-31 25 2021-06-30 22 2021-09-30 36 2021-12-31 39 2022-03-31 46 2022-06-30 18 2022-09-30 14 2022-12-31 21 2023-03-31 19 2023-06-30 17 2023-09-30 18