Quarter US dollars 2004-12-31 196 2005-03-31 83 2005-06-30 95 2005-09-30 624 2005-12-31 496 2006-03-31 1094 2006-06-30 111 2006-09-30 103 2006-12-31 80 2007-03-31 114 2007-06-30 52 2007-09-30 122 2007-12-31 175 2008-03-31 157 2008-06-30 147 2008-09-30 102 2008-12-31 88 2009-03-31 64 2009-06-30 86 2009-09-30 40 2009-12-31 47 2010-03-31 38 2010-06-30 46 2010-09-30 2 2010-12-31 74 2011-03-31 38 2011-06-30 45 2011-09-30 30 2011-12-31 31 2012-03-31 11 2012-06-30 53 2012-09-30 58 2012-12-31 82 2013-03-31 76 2013-06-30 68 2013-09-30 105 2013-12-31 63 2014-03-31 97 2014-06-30 56 2014-09-30 88 2014-12-31 58 2015-03-31 34 2015-06-30 13 2015-09-30 44 2015-12-31 6 2016-03-31 1 2016-06-30 21 2016-09-30 9 2016-12-31 6 2017-03-31 44 2017-06-30 38 2017-09-30 68 2017-12-31 174 2018-03-31 115 2018-06-30 65 2018-09-30 143 2018-12-31 101 2019-03-31 212 2019-06-30 199 2019-09-30 241 2019-12-31 205 2020-03-31 242 2020-06-30 187 2020-09-30 162 2020-12-31 23 2021-03-31 19 2021-06-30 11 2021-09-30 5 2021-12-31 3 2022-03-31 0 2022-06-30 5 2022-09-30 14 2022-12-31 62 2023-03-31 19 2023-06-30 30 2023-09-30 23