Quarter	US dollars
2004-12-31	14866
2005-03-31	14267
2005-06-30	8228
2005-09-30	10887
2005-12-31	11371
2006-03-31	9236
2006-06-30	24952
2006-09-30	23599
2006-12-31	27206
2007-03-31	19407
2007-06-30	19669
2007-09-30	20282
2007-12-31	16536
2008-03-31	36055
2008-06-30	46875
2008-09-30	42068
2008-12-31	46780
2009-03-31	5353
2009-06-30	4812
2009-09-30	5841
2009-12-31	11439
2010-03-31	16629
2010-06-30	8813
2010-09-30	10868
2010-12-31	8515
2011-03-31	12245
2011-06-30	9916
2011-09-30	9790
2011-12-31	11576
2012-03-31	17969
2012-06-30	4748
2012-09-30	7797
2012-12-31	6511
2013-03-31	6552
2013-06-30	5952
2013-09-30	6463
2013-12-31	5101
2014-03-31	5015
2014-06-30	5153
2014-09-30	5018
2014-12-31	4189
2015-03-31	7164
2015-06-30	3245
2015-09-30	3149
2015-12-31	2955
2016-03-31	3635
2016-06-30	3822
2016-09-30	4191
2016-12-31	2718
2017-03-31	2955
2017-06-30	3381
2017-09-30	3028
2017-12-31	2640
2018-03-31	2388
2018-06-30	1781
2018-09-30	1663
2018-12-31	3425
2019-03-31	2672
2019-06-30	2563
2019-09-30	3183
2019-12-31	1744
2020-03-31	4479
2020-06-30	1688
2020-09-30	1718
2020-12-31	1639
2021-03-31	2136
2021-06-30	1823
2021-09-30	1791
2021-12-31	1396
2022-03-31	2672
2022-06-30	3864
2022-09-30	5183
2022-12-31	5238
2023-03-31	5150
2023-06-30	4219
2023-09-30	7257