Quarter	US dollars
2004-12-31	2127
2005-03-31	2270
2005-06-30	2450
2005-09-30	2841
2005-12-31	3136
2006-03-31	3953
2006-06-30	4426
2006-09-30	4487
2006-12-31	5078
2007-03-31	5305
2007-06-30	6140
2007-09-30	6365
2007-12-31	7295
2008-03-31	8789
2008-06-30	9292
2008-09-30	9098
2008-12-31	8200
2009-03-31	8389
2009-06-30	8430
2009-09-30	9196
2009-12-31	9642
2010-03-31	10215
2010-06-30	10421
2010-09-30	10639
2010-12-31	10797
2011-03-31	9907
2011-06-30	9844
2011-09-30	10125
2011-12-31	9476
2012-03-31	9855
2012-06-30	9904
2012-09-30	10145
2012-12-31	9660
2013-03-31	10193
2013-06-30	9064
2013-09-30	9399
2013-12-31	9664
2014-03-31	9669
2014-06-30	9099
2014-09-30	9173
2014-12-31	10236
2015-03-31	9763
2015-06-30	9577
2015-09-30	10194
2015-12-31	10237
2016-03-31	9431
2016-06-30	9799
2016-09-30	9947
2016-12-31	6551
2017-03-31	7036
2017-06-30	6618
2017-09-30	6723
2017-12-31	6986
2018-03-31	7655
2018-06-30	7284
2018-09-30	7342
2018-12-31	7407
2019-03-31	8849
2019-06-30	8472
2019-09-30	8390
2019-12-31	9164
2020-03-31	9364
2020-06-30	8945
2020-09-30	10543
2020-12-31	11028
2021-03-31	11138
2021-06-30	11906
2021-09-30	12504
2021-12-31	11769
2022-03-31	10157
2022-06-30	9823
2022-09-30	10297
2022-12-31	9817
2023-03-31	9196
2023-06-30	7998
2023-09-30	8723