Quarter US dollars 2004-12-31 144 2005-03-31 473 2005-06-30 466 2005-09-30 493 2005-12-31 486 2006-03-31 869 2006-06-30 1230 2006-09-30 985 2006-12-31 932 2007-03-31 1034 2007-06-30 1932 2007-09-30 2347 2007-12-31 1328 2008-03-31 610 2008-06-30 404 2008-09-30 533 2008-12-31 1514 2009-03-31 774 2009-06-30 1492 2009-09-30 309 2009-12-31 568 2010-03-31 434 2010-06-30 784 2010-09-30 637 2010-12-31 834 2011-03-31 1111 2011-06-30 2192 2011-09-30 1910 2011-12-31 830 2012-03-31 1138 2012-06-30 519 2012-09-30 625 2012-12-31 514 2013-03-31 569 2013-06-30 1356 2013-09-30 899 2013-12-31 377 2014-03-31 1145 2014-06-30 1676 2014-09-30 2453 2014-12-31 1559 2015-03-31 1149 2015-06-30 1263 2015-09-30 965 2015-12-31 616 2016-03-31 279 2016-06-30 428 2016-09-30 272 2016-12-31 1410 2017-03-31 1326 2017-06-30 525 2017-09-30 1012 2017-12-31 984 2018-03-31 1495 2018-06-30 1751 2018-09-30 1097 2018-12-31 1039 2019-03-31 653 2019-06-30 878 2019-09-30 606 2019-12-31 1160 2020-03-31 1372 2020-06-30 817 2020-09-30 677 2020-12-31 809 2021-03-31 544 2021-06-30 608 2021-09-30 913 2021-12-31 566 2022-03-31 1065 2022-06-30 1020 2022-09-30 1179 2022-12-31 665 2023-03-31 1280 2023-06-30 1718 2023-09-30 1199