Quarter	US dollars
2004-12-31	1476
2005-03-31	1471
2005-06-30	1561
2005-09-30	1167
2005-12-31	1258
2006-03-31	1332
2006-06-30	1979
2006-09-30	2107
2006-12-31	2389
2007-03-31	2569
2007-06-30	2624
2007-09-30	2706
2007-12-31	2638
2008-03-31	2943
2008-06-30	3154
2008-09-30	3071
2008-12-31	2649
2009-03-31	2517
2009-06-30	2189
2009-09-30	2263
2009-12-31	2540
2010-03-31	2903
2010-06-30	3012
2010-09-30	3167
2010-12-31	3652
2011-03-31	3799
2011-06-30	4305
2011-09-30	4636
2011-12-31	4652
2012-03-31	4671
2012-06-30	5266
2012-09-30	5457
2012-12-31	5659
2013-03-31	5444
2013-06-30	5163
2013-09-30	4936
2013-12-31	4567
2014-03-31	4028
2014-06-30	4237
2014-09-30	4528
2014-12-31	4420
2015-03-31	4622
2015-06-30	4598
2015-09-30	4880
2015-12-31	3699
2016-03-31	3435
2016-06-30	3399
2016-09-30	3296
2016-12-31	3307
2017-03-31	3606
2017-06-30	3628
2017-09-30	3669
2017-12-31	3965
2018-03-31	4056
2018-06-30	3062
2018-09-30	2452
2018-12-31	3560
2019-03-31	3415
2019-06-30	3631
2019-09-30	2627
2019-12-31	3272
2020-03-31	3061
2020-06-30	3287
2020-09-30	3312
2020-12-31	3180
2021-03-31	2861
2021-06-30	3561
2021-09-30	3755
2021-12-31	3939
2022-03-31	4440
2022-06-30	4733
2022-09-30	5172
2022-12-31	4397
2023-03-31	4264
2023-06-30	4746
2023-09-30	3885