Quarter	US dollars
2004-12-31	2903
2005-03-31	3372
2005-06-30	3250
2005-09-30	2926
2005-12-31	3026
2006-03-31	3351
2006-06-30	3377
2006-09-30	4560
2006-12-31	6413
2007-03-31	4564
2007-06-30	4173
2007-09-30	3867
2007-12-31	6709
2008-03-31	9751
2008-06-30	6537
2008-09-30	5640
2008-12-31	5059
2009-03-31	5070
2009-06-30	5423
2009-09-30	4883
2009-12-31	4492
2010-03-31	3676
2010-06-30	3579
2010-09-30	1804
2010-12-31	3007
2011-03-31	2477
2011-06-30	2203
2011-09-30	2075
2011-12-31	2792
2012-03-31	2776
2012-06-30	2511
2012-09-30	2970
2012-12-31	1948
2013-03-31	1620
2013-06-30	1673
2013-09-30	1733
2013-12-31	2241
2014-03-31	2601
2014-06-30	1623
2014-09-30	2469
2014-12-31	4033
2015-03-31	1822
2015-06-30	2197
2015-09-30	1531
2015-12-31	1328
2016-03-31	2193
2016-06-30	2670
2016-09-30	1691
2016-12-31	1090
2017-03-31	1312
2017-06-30	2338
2017-09-30	1592
2017-12-31	1201
2018-03-31	1378
2018-06-30	1565
2018-09-30	2107
2018-12-31	2019
2019-03-31	3810
2019-06-30	2962
2019-09-30	2320
2019-12-31	1892
2020-03-31	1622
2020-06-30	1402
2020-09-30	1618
2020-12-31	1940
2021-03-31	1956
2021-06-30	2407
2021-09-30	1807
2021-12-31	3168
2022-03-31	4224
2022-06-30	2693
2022-09-30	2328
2022-12-31	2332
2023-03-31	2431
2023-06-30	2236
2023-09-30	2622