Quarter US dollars 2004-12-31 253 2005-03-31 250 2005-06-30 278 2005-09-30 341 2005-12-31 244 2006-03-31 272 2006-06-30 285 2006-09-30 217 2006-12-31 190 2007-03-31 192 2007-06-30 177 2007-09-30 1381 2007-12-31 948 2008-03-31 837 2008-06-30 880 2008-09-30 1217 2008-12-31 1221 2009-03-31 868 2009-06-30 1056 2009-09-30 884 2009-12-31 804 2010-03-31 1043 2010-06-30 814 2010-09-30 827 2010-12-31 888 2011-03-31 1093 2011-06-30 883 2011-09-30 673 2011-12-31 1160 2012-03-31 805 2012-06-30 1565 2012-09-30 1461 2012-12-31 1748 2013-03-31 1966 2013-06-30 943 2013-09-30 1054 2013-12-31 864 2014-03-31 1082 2014-06-30 1077 2014-09-30 874 2014-12-31 720 2015-03-31 681 2015-06-30 714 2015-09-30 842 2015-12-31 836 2016-03-31 516 2016-06-30 614 2016-09-30 726 2016-12-31 469 2017-03-31 749 2017-06-30 1117 2017-09-30 1195 2017-12-31 1456 2018-03-31 1330 2018-06-30 1353 2018-09-30 827 2018-12-31 698 2019-03-31 1599 2019-06-30 1372 2019-09-30 950 2019-12-31 1472 2020-03-31 1595 2020-06-30 1405 2020-09-30 2400 2020-12-31 856 2021-03-31 713 2021-06-30 1042 2021-09-30 754 2021-12-31 919 2022-03-31 1714 2022-06-30 2665 2022-09-30 2325 2022-12-31 2164 2023-03-31 960 2023-06-30 1027 2023-09-30 1320