Quarter US dollars 2004-12-31 113 2005-03-31 106 2005-06-30 104 2005-09-30 127 2005-12-31 113 2006-03-31 147 2006-06-30 155 2006-09-30 157 2006-12-31 184 2007-03-31 665 2007-06-30 813 2007-09-30 907 2007-12-31 930 2008-03-31 1459 2008-06-30 939 2008-09-30 932 2008-12-31 415 2009-03-31 553 2009-06-30 321 2009-09-30 349 2009-12-31 431 2010-03-31 496 2010-06-30 744 2010-09-30 506 2010-12-31 576 2011-03-31 596 2011-06-30 828 2011-09-30 788 2011-12-31 846 2012-03-31 713 2012-06-30 1076 2012-09-30 941 2012-12-31 983 2013-03-31 880 2013-06-30 871 2013-09-30 946 2013-12-31 932 2014-03-31 1275 2014-06-30 1369 2014-09-30 1707 2014-12-31 1406 2015-03-31 1387 2015-06-30 1073 2015-09-30 694 2015-12-31 541 2016-03-31 638 2016-06-30 698 2016-09-30 1122 2016-12-31 1128 2017-03-31 1173 2017-06-30 1200 2017-09-30 1214 2017-12-31 1306 2018-03-31 1277 2018-06-30 1495 2018-09-30 1198 2018-12-31 1020 2019-03-31 1072 2019-06-30 975 2019-09-30 877 2019-12-31 1151 2020-03-31 1309 2020-06-30 704 2020-09-30 963 2020-12-31 879 2021-03-31 1559 2021-06-30 2428 2021-09-30 2763 2021-12-31 1987 2022-03-31 2253 2022-06-30 2494 2022-09-30 2477 2022-12-31 2058 2023-03-31 1795 2023-06-30 1300 2023-09-30 1011