Quarter	US dollars
2004-12-31	824
2005-03-31	955
2005-06-30	1025
2005-09-30	1220
2005-12-31	1217
2006-03-31	1221
2006-06-30	1265
2006-09-30	1638
2006-12-31	1272
2007-03-31	1400
2007-06-30	1479
2007-09-30	1508
2007-12-31	1686
2008-03-31	2125
2008-06-30	2348
2008-09-30	2327
2008-12-31	2204
2009-03-31	2253
2009-06-30	2516
2009-09-30	2551
2009-12-31	2585
2010-03-31	2700
2010-06-30	2814
2010-09-30	3216
2010-12-31	3421
2011-03-31	3653
2011-06-30	3817
2011-09-30	3644
2011-12-31	3593
2012-03-31	3585
2012-06-30	3238
2012-09-30	3417
2012-12-31	3618
2013-03-31	3817
2013-06-30	3687
2013-09-30	3751
2013-12-31	3983
2014-03-31	3628
2014-06-30	3768
2014-09-30	4071
2014-12-31	4277
2015-03-31	4123
2015-06-30	3959
2015-09-30	3490
2015-12-31	3442
2016-03-31	3492
2016-06-30	3442
2016-09-30	3622
2016-12-31	3537
2017-03-31	3716
2017-06-30	4404
2017-09-30	4504
2017-12-31	4258
2018-03-31	4225
2018-06-30	4304
2018-09-30	4274
2018-12-31	3955
2019-03-31	3871
2019-06-30	3947
2019-09-30	3894
2019-12-31	3767
2020-03-31	3797
2020-06-30	3684
2020-09-30	3919
2020-12-31	3775
2021-03-31	3579
2021-06-30	3627
2021-09-30	3758
2021-12-31	3526
2022-03-31	2896
2022-06-30	2382
2022-09-30	2698
2022-12-31	2137
2023-03-31	1940
2023-06-30	1976
2023-09-30	1775