Quarter	US dollars
2004-12-31	899
2005-03-31	1108
2005-06-30	1081
2005-09-30	1127
2005-12-31	1207
2006-03-31	1280
2006-06-30	1289
2006-09-30	1061
2006-12-31	1035
2007-03-31	1204
2007-06-30	1324
2007-09-30	1571
2007-12-31	1501
2008-03-31	2576
2008-06-30	1765
2008-09-30	1889
2008-12-31	1928
2009-03-31	2046
2009-06-30	1821
2009-09-30	1874
2009-12-31	1694
2010-03-31	1743
2010-06-30	1997
2010-09-30	2371
2010-12-31	2179
2011-03-31	2276
2011-06-30	2103
2011-09-30	2016
2011-12-31	2248
2012-03-31	2188
2012-06-30	4094
2012-09-30	4330
2012-12-31	4296
2013-03-31	4015
2013-06-30	4031
2013-09-30	3911
2013-12-31	3811
2014-03-31	3870
2014-06-30	4148
2014-09-30	4129
2014-12-31	4141
2015-03-31	4260
2015-06-30	3995
2015-09-30	3549
2015-12-31	3383
2016-03-31	3702
2016-06-30	3626
2016-09-30	3748
2016-12-31	3548
2017-03-31	3436
2017-06-30	3597
2017-09-30	3671
2017-12-31	3900
2018-03-31	3731
2018-06-30	3581
2018-09-30	3349
2018-12-31	3674
2019-03-31	4124
2019-06-30	4404
2019-09-30	4539
2019-12-31	4770
2020-03-31	4602
2020-06-30	4397
2020-09-30	4074
2020-12-31	4044
2021-03-31	3913
2021-06-30	3829
2021-09-30	4009
2021-12-31	3823
2022-03-31	3608
2022-06-30	3615
2022-09-30	3545
2022-12-31	3295
2023-03-31	3233
2023-06-30	3300
2023-09-30	809