Quarter	US dollars
2004-12-31	57678
2005-03-31	66809
2005-06-30	211053
2005-09-30	269146
2005-12-31	270469
2006-03-31	344187
2006-06-30	425898
2006-09-30	493649
2006-12-31	541680
2007-03-31	608705
2007-06-30	681111
2007-09-30	791536
2007-12-31	859685
2008-03-31	994412
2008-06-30	934314
2008-09-30	813538
2008-12-31	681023
2009-03-31	658638
2009-06-30	601029
2009-09-30	479525
2009-12-31	416562
2010-03-31	394419
2010-06-30	390679
2010-09-30	437255
2010-12-31	564324
2011-03-31	551311
2011-06-30	567007
2011-09-30	651235
2011-12-31	607367
2012-03-31	498614
2012-06-30	496074
2012-09-30	517621
2012-12-31	575844
2013-03-31	1286780
2013-06-30	1250518
2013-09-30	1223884
2013-12-31	1104292
2014-03-31	1016728
2014-06-30	891395
2014-09-30	827028
2014-12-31	693351
2015-03-31	643793
2015-06-30	607092
2015-09-30	575444
2015-12-31	519117
2016-03-31	541113
2016-06-30	495895
2016-09-30	484655
2016-12-31	422004
2017-03-31	425158
2017-06-30	388714
2017-09-30	358992
2017-12-31	340453
2018-03-31	315757
2018-06-30	270119
2018-09-30	280700
2018-12-31	263467
2019-03-31	276589
2019-06-30	354478
2019-09-30	353312
2019-12-31	366575
2020-03-31	364351
2020-06-30	334794
2020-09-30	355242
2020-12-31	338645
2021-03-31	380607
2021-06-30	376865
2021-09-30	442631
2021-12-31	469624
2022-03-31	561774
2022-06-30	496074
2022-09-30	525525
2022-12-31	522721
2023-03-31	587381
2023-06-30	569649
2023-09-30	563767