Quarter US dollars 2004-12-31 190 2005-03-31 89 2005-06-30 81 2005-09-30 74 2005-12-31 46 2006-03-31 232 2006-06-30 18 2006-09-30 17 2006-12-31 14 2007-03-31 177 2007-06-30 419 2007-09-30 440 2007-12-31 675 2008-03-31 763 2008-06-30 744 2008-09-30 1590 2008-12-31 1543 2009-03-31 1184 2009-06-30 1047 2009-09-30 1207 2009-12-31 1172 2010-03-31 1110 2010-06-30 1243 2010-09-30 1115 2010-12-31 1061 2011-03-31 915 2011-06-30 1598 2011-09-30 1559 2011-12-31 1473 2012-03-31 2057 2012-06-30 1653 2012-09-30 1978 2012-12-31 1253 2013-03-31 1137 2013-06-30 1872 2013-09-30 1658 2013-12-31 663 2014-03-31 889 2014-06-30 865 2014-09-30 966 2014-12-31 1292 2015-03-31 998 2015-06-30 1332 2015-09-30 1228 2015-12-31 984 2016-03-31 384 2016-06-30 349 2016-09-30 375 2016-12-31 396 2017-03-31 685 2017-06-30 372 2017-09-30 373 2017-12-31 367 2018-03-31 448 2018-06-30 400 2018-09-30 399 2018-12-31 398 2019-03-31 435 2019-06-30 552 2019-09-30 543 2019-12-31 522 2020-03-31 647 2020-06-30 662 2020-09-30 628 2020-12-31 609 2021-03-31 524 2021-06-30 531 2021-09-30 608 2021-12-31 685 2022-03-31 645 2022-06-30 673 2022-09-30 846 2022-12-31 797 2023-03-31 750 2023-06-30 654 2023-09-30 1036