Quarter	US dollars
2004-12-31	372
2005-03-31	442
2005-06-30	82
2005-09-30	557
2005-12-31	609
2006-03-31	716
2006-06-30	978
2006-09-30	809
2006-12-31	988
2007-03-31	1194
2007-06-30	1467
2007-09-30	1504
2007-12-31	1455
2008-03-31	1904
2008-06-30	1849
2008-09-30	2108
2008-12-31	2142
2009-03-31	2140
2009-06-30	2197
2009-09-30	2162
2009-12-31	2081
2010-03-31	2145
2010-06-30	2319
2010-09-30	2275
2010-12-31	2436
2011-03-31	2564
2011-06-30	2560
2011-09-30	2458
2011-12-31	2446
2012-03-31	3123
2012-06-30	2949
2012-09-30	2934
2012-12-31	2960
2013-03-31	4160
2013-06-30	4465
2013-09-30	4277
2013-12-31	4160
2014-03-31	4352
2014-06-30	4358
2014-09-30	4800
2014-12-31	4790
2015-03-31	4901
2015-06-30	4974
2015-09-30	4949
2015-12-31	4969
2016-03-31	4956
2016-06-30	4979
2016-09-30	5320
2016-12-31	4977
2017-03-31	4250
2017-06-30	4249
2017-09-30	3990
2017-12-31	4092
2018-03-31	4474
2018-06-30	4754
2018-09-30	3794
2018-12-31	3796
2019-03-31	3710
2019-06-30	3967
2019-09-30	4122
2019-12-31	4317
2020-03-31	4453
2020-06-30	4405
2020-09-30	4344
2020-12-31	4241
2021-03-31	4187
2021-06-30	4540
2021-09-30	4446
2021-12-31	4354
2022-03-31	4236
2022-06-30	3738
2022-09-30	3774
2022-12-31	3528
2023-03-31	3467
2023-06-30	3343
2023-09-30	3445