Quarter US dollars 2004-12-31 129 2005-03-31 132 2005-06-30 125 2005-09-30 191 2005-12-31 266 2006-03-31 385 2006-06-30 1439 2006-09-30 2006 2006-12-31 307 2007-03-31 388 2007-06-30 1764 2007-09-30 3349 2007-12-31 2335 2008-03-31 658 2008-06-30 1863 2008-09-30 2276 2008-12-31 397 2009-03-31 126 2009-06-30 188 2009-09-30 208 2009-12-31 140 2010-03-31 302 2010-06-30 205 2010-09-30 408 2010-12-31 908 2011-03-31 396 2011-06-30 499 2011-09-30 499 2011-12-31 512 2012-03-31 478 2012-06-30 516 2012-09-30 307 2012-12-31 831 2013-03-31 706 2013-06-30 281 2013-09-30 1117 2013-12-31 818 2014-03-31 1230 2014-06-30 1041 2014-09-30 648 2014-12-31 1578 2015-03-31 741 2015-06-30 315 2015-09-30 527 2015-12-31 1432 2016-03-31 791 2016-06-30 219 2016-09-30 333 2016-12-31 997 2017-03-31 1034 2017-06-30 404 2017-09-30 678 2017-12-31 965 2018-03-31 543 2018-06-30 619 2018-09-30 1621 2018-12-31 1983 2019-03-31 1904 2019-06-30 948 2019-09-30 1036 2019-12-31 1505 2020-03-31 711 2020-06-30 916 2020-09-30 1194 2020-12-31 839 2021-03-31 865 2021-06-30 2565 2021-09-30 2903 2021-12-31 1558 2022-03-31 916 2022-06-30 1375 2022-09-30 1104 2022-12-31 1237 2023-03-31 1469 2023-06-30 994 2023-09-30 685