Quarter US dollars 2004-12-31 12 2005-03-31 6 2005-06-30 48 2005-09-30 55 2005-12-31 43 2006-03-31 49 2006-06-30 91 2006-09-30 103 2006-12-31 78 2007-03-31 88 2007-06-30 150 2007-09-30 128 2007-12-31 135 2008-03-31 97 2008-06-30 145 2008-09-30 144 2008-12-31 125 2009-03-31 125 2009-06-30 119 2009-09-30 141 2009-12-31 63 2010-03-31 108 2010-06-30 181 2010-09-30 158 2010-12-31 205 2011-03-31 180 2011-06-30 299 2011-09-30 234 2011-12-31 278 2012-03-31 219 2012-06-30 196 2012-09-30 120 2012-12-31 165 2013-03-31 132 2013-06-30 93 2013-09-30 108 2013-12-31 96 2014-03-31 68 2014-06-30 87 2014-09-30 233 2014-12-31 214 2015-03-31 123 2015-06-30 25 2015-09-30 12 2015-12-31 21 2016-03-31 13 2016-06-30 28 2016-09-30 10 2016-12-31 14 2017-03-31 25 2017-06-30 49 2017-09-30 40 2017-12-31 53 2018-03-31 46 2018-06-30 46 2018-09-30 30 2018-12-31 31 2019-03-31 21 2019-06-30 31 2019-09-30 278 2019-12-31 264 2020-03-31 262 2020-06-30 141 2020-09-30 150 2020-12-31 173 2021-03-31 135 2021-06-30 113 2021-09-30 100 2021-12-31 112 2022-03-31 104 2022-06-30 94 2022-09-30 136 2022-12-31 139 2023-03-31 111 2023-06-30 264 2023-09-30 327