Quarter US dollars 2004-12-31 42 2005-03-31 40 2005-06-30 113 2005-09-30 76 2005-12-31 51 2006-03-31 64 2006-06-30 30 2006-09-30 224 2006-12-31 221 2007-03-31 210 2007-06-30 207 2007-09-30 57 2007-12-31 50 2008-03-31 48 2008-06-30 58 2008-09-30 251 2008-12-31 27 2009-03-31 272 2009-06-30 280 2009-09-30 27 2009-12-31 97 2010-03-31 96 2010-06-30 114 2010-09-30 110 2010-12-31 44 2011-03-31 289 2011-06-30 300 2011-09-30 307 2011-12-31 308 2012-03-31 56 2012-06-30 58 2012-09-30 50 2012-12-31 134 2013-03-31 135 2013-06-30 133 2013-09-30 183 2013-12-31 112 2014-03-31 258 2014-06-30 274 2014-09-30 154 2014-12-31 204 2015-03-31 153 2015-06-30 85 2015-09-30 129 2015-12-31 101 2016-03-31 111 2016-06-30 208 2016-09-30 188 2016-12-31 186 2017-03-31 161 2017-06-30 101 2017-09-30 301 2017-12-31 178 2018-03-31 166 2018-06-30 169 2018-09-30 274 2018-12-31 308 2019-03-31 324 2019-06-30 182 2019-09-30 169 2019-12-31 157 2020-03-31 202 2020-06-30 227 2020-09-30 193 2020-12-31 161 2021-03-31 287 2021-06-30 257 2021-09-30 252 2021-12-31 388 2022-03-31 317 2022-06-30 230 2022-09-30 215 2022-12-31 546 2023-03-31 124 2023-06-30 220 2023-09-30 273