Quarter US dollars 2004-12-31 67 2005-03-31 70 2005-06-30 118 2005-09-30 103 2005-12-31 77 2006-03-31 68 2006-06-30 67 2006-09-30 73 2006-12-31 76 2007-03-31 63 2007-06-30 62 2007-09-30 86 2007-12-31 22 2008-03-31 95 2008-06-30 34 2008-09-30 34 2008-12-31 32 2009-03-31 33 2009-06-30 44 2009-09-30 170 2009-12-31 94 2010-03-31 11 2010-06-30 52 2010-09-30 54 2010-12-31 52 2011-03-31 40 2011-06-30 22 2011-09-30 22 2011-12-31 70 2012-03-31 54 2012-06-30 91 2012-09-30 84 2012-12-31 44 2013-03-31 43 2013-06-30 71 2013-09-30 66 2013-12-31 45 2014-03-31 50 2014-06-30 36 2014-09-30 28 2014-12-31 31 2015-03-31 24 2015-06-30 28 2015-09-30 27 2015-12-31 96 2016-03-31 118 2016-06-30 77 2016-09-30 71 2016-12-31 52 2017-03-31 39 2017-06-30 125 2017-09-30 121 2017-12-31 93 2018-03-31 104 2018-06-30 75 2018-09-30 72 2018-12-31 77 2019-03-31 79 2019-06-30 64 2019-09-30 58 2019-12-31 38 2020-03-31 51 2020-06-30 53 2020-09-30 53 2020-12-31 55 2021-03-31 32 2021-06-30 30 2021-09-30 42 2021-12-31 35 2022-03-31 37 2022-06-30 52 2022-09-30 65 2022-12-31 75 2023-03-31 67 2023-06-30 76 2023-09-30 94