Quarter US dollars 2004-12-31 661233 2005-03-31 692361 2005-06-30 718832 2005-09-30 747394 2005-12-31 713278 2006-03-31 820572 2006-06-30 814751 2006-09-30 898886 2006-12-31 901361 2007-03-31 988085 2007-06-30 957683 2007-09-30 1020240 2007-12-31 1003846 2008-03-31 1086262 2008-06-30 1002021 2008-09-30 1201964 2008-12-31 906454 2009-03-31 927908 2009-06-30 901709 2009-09-30 834615 2009-12-31 775403 2010-03-31 831340 2010-06-30 788897 2010-09-30 705952 2010-12-31 701436 2011-03-31 650207 2011-06-30 710823 2011-09-30 721259 2011-12-31 667954 2012-03-31 678561 2012-06-30 656131 2012-09-30 689357 2012-12-31 687523 2013-03-31 636624 2013-06-30 641381 2013-09-30 612119 2013-12-31 611452 2014-03-31 602726 2014-06-30 592905 2014-09-30 577562 2014-12-31 570071 2015-03-31 581325 2015-06-30 535709 2015-09-30 401143 2015-12-31 407204 2016-03-31 406141 2016-06-30 430289 2016-09-30 433836 2016-12-31 441705 2017-03-31 521038 2017-06-30 533858 2017-09-30 528488 2017-12-31 569399 2018-03-31 587295 2018-06-30 560832 2018-09-30 545928 2018-12-31 539631 2019-03-31 588892 2019-06-30 608229 2019-09-30 632421 2019-12-31 613133 2020-03-31 713452 2020-06-30 674937 2020-09-30 679431 2020-12-31 686295 2021-03-31 687622 2021-06-30 733635 2021-09-30 748602 2021-12-31 775930 2022-03-31 788255 2022-06-30 755694 2022-09-30 794920 2022-12-31 753824 2023-03-31 795824 2023-06-30 853374 2023-09-30 868892