Quarter US dollars 2004-12-31 430 2005-03-31 416 2005-06-30 267 2005-09-30 292 2005-12-31 271 2006-03-31 317 2006-06-30 1737 2006-09-30 1330 2006-12-31 1186 2007-03-31 1045 2007-06-30 698 2007-09-30 1989 2007-12-31 2363 2008-03-31 2566 2008-06-30 2794 2008-09-30 2602 2008-12-31 2468 2009-03-31 2492 2009-06-30 3019 2009-09-30 3211 2009-12-31 2610 2010-03-31 2492 2010-06-30 2315 2010-09-30 328 2010-12-31 380 2011-03-31 377 2011-06-30 376 2011-09-30 2075 2011-12-31 342 2012-03-31 315 2012-06-30 265 2012-09-30 257 2012-12-31 289 2013-03-31 307 2013-06-30 329 2013-09-30 343 2013-12-31 360 2014-03-31 460 2014-06-30 496 2014-09-30 551 2014-12-31 567 2015-03-31 647 2015-06-30 659 2015-09-30 657 2015-12-31 834 2016-03-31 878 2016-06-30 753 2016-09-30 2029 2016-12-31 990 2017-03-31 968 2017-06-30 900 2017-09-30 673 2017-12-31 1355 2018-03-31 537 2018-06-30 725 2018-09-30 792 2018-12-31 1043 2019-03-31 1044 2019-06-30 845 2019-09-30 759 2019-12-31 716 2020-03-31 696 2020-06-30 645 2020-09-30 1004 2020-12-31 1534 2021-03-31 1520 2021-06-30 2492 2021-09-30 2377 2021-12-31 3084 2022-03-31 3247 2022-06-30 2996 2022-09-30 2813 2022-12-31 2722 2023-03-31 2711 2023-06-30 2813 2023-09-30 2371