Quarter US dollars 2004-12-31 54 2005-03-31 95 2005-06-30 43 2005-09-30 42 2005-12-31 86 2006-03-31 69 2006-06-30 91 2006-09-30 99 2006-12-31 68 2007-03-31 65 2007-06-30 78 2007-09-30 96 2007-12-31 92 2008-03-31 58 2008-06-30 86 2008-09-30 5 2008-12-31 197 2009-03-31 271 2009-06-30 237 2009-09-30 248 2009-12-31 84 2010-03-31 115 2010-06-30 263 2010-09-30 329 2010-12-31 183 2011-03-31 260 2011-06-30 79 2011-09-30 106 2011-12-31 73 2012-03-31 297 2012-06-30 2 2012-09-30 50 2012-12-31 66 2013-03-31 50 2013-06-30 53 2013-09-30 60 2013-12-31 63 2014-03-31 45 2014-06-30 188 2014-09-30 224 2014-12-31 194 2015-03-31 196 2015-06-30 138 2015-09-30 182 2015-12-31 120 2016-03-31 206 2016-06-30 187 2016-09-30 214 2016-12-31 103 2017-03-31 131 2017-06-30 168 2017-09-30 162 2017-12-31 120 2018-03-31 125 2018-06-30 116 2018-09-30 124 2018-12-31 110 2019-03-31 122 2019-06-30 143 2019-09-30 156 2019-12-31 106 2020-03-31 120 2020-06-30 104 2020-09-30 0 2020-12-31 0 2021-03-31 0 2021-06-30 0 2021-09-30 0 2021-12-31 0 2022-03-31 0 2022-06-30 0 2022-09-30 13 2022-12-31 0 2023-03-31 0 2023-06-30 0 2023-09-30 0