Quarter	US dollars
2004-12-31	59918
2005-03-31	75508
2005-06-30	63119
2005-09-30	85263
2005-12-31	66919
2006-03-31	87882
2006-06-30	92823
2006-09-30	109321
2006-12-31	108388
2007-03-31	127079
2007-06-30	141517
2007-09-30	167692
2007-12-31	175108
2008-03-31	202711
2008-06-30	191864
2008-09-30	199169
2008-12-31	157890
2009-03-31	148042
2009-06-30	156553
2009-09-30	173553
2009-12-31	173575
2010-03-31	209907
2010-06-30	231892
2010-09-30	262634
2010-12-31	281430
2011-03-31	303685
2011-06-30	347339
2011-09-30	338935
2011-12-31	322108
2012-03-31	334979
2012-06-30	330675
2012-09-30	333553
2012-12-31	339408
2013-03-31	357988
2013-06-30	350813
2013-09-30	367353
2013-12-31	351410
2014-03-31	367333
2014-06-30	353248
2014-09-30	352498
2014-12-31	329160
2015-03-31	322996
2015-06-30	303952
2015-09-30	282905
2015-12-31	257575
2016-03-31	259024
2016-06-30	267623
2016-09-30	262969
2016-12-31	248981
2017-03-31	269811
2017-06-30	304292
2017-09-30	299662
2017-12-31	303310
2018-03-31	313156
2018-06-30	291719
2018-09-30	290958
2018-12-31	292597
2019-03-31	314999
2019-06-30	319850
2019-09-30	311381
2019-12-31	300576
2020-03-31	299839
2020-06-30	283114
2020-09-30	275281
2020-12-31	309970
2021-03-31	316435
2021-06-30	327711
2021-09-30	315825
2021-12-31	348312
2022-03-31	328599
2022-06-30	316538
2022-09-30	334748
2022-12-31	328766
2023-03-31	339866
2023-06-30	346087
2023-09-30	327919