Quarter US dollars 2004-12-31 202 2005-03-31 200 2005-06-30 111 2005-09-30 186 2005-12-31 256 2006-03-31 225 2006-06-30 353 2006-09-30 359 2006-12-31 534 2007-03-31 602 2007-06-30 508 2007-09-30 862 2007-12-31 882 2008-03-31 861 2008-06-30 1021 2008-09-30 1299 2008-12-31 1044 2009-03-31 1159 2009-06-30 985 2009-09-30 1049 2009-12-31 943 2010-03-31 890 2010-06-30 1959 2010-09-30 2012 2010-12-31 2594 2011-03-31 2360 2011-06-30 1989 2011-09-30 1887 2011-12-31 1242 2012-03-31 1028 2012-06-30 990 2012-09-30 919 2012-12-31 1041 2013-03-31 1011 2013-06-30 1054 2013-09-30 1014 2013-12-31 1086 2014-03-31 1092 2014-06-30 1122 2014-09-30 1020 2014-12-31 730 2015-03-31 389 2015-06-30 327 2015-09-30 285 2015-12-31 246 2016-03-31 334 2016-06-30 302 2016-09-30 278 2016-12-31 258 2017-03-31 278 2017-06-30 277 2017-09-30 319 2017-12-31 259 2018-03-31 265 2018-06-30 210 2018-09-30 146 2018-12-31 163 2019-03-31 168 2019-06-30 163 2019-09-30 196 2019-12-31 222 2020-03-31 236 2020-06-30 221 2020-09-30 178 2020-12-31 130 2021-03-31 126 2021-06-30 249 2021-09-30 198 2021-12-31 202 2022-03-31 208 2022-06-30 123 2022-09-30 123 2022-12-31 80 2023-03-31 83 2023-06-30 111 2023-09-30 146