Quarter	US dollars
2004-12-31	2152
2005-03-31	2764
2005-06-30	2570
2005-09-30	2942
2005-12-31	3041
2006-03-31	3339
2006-06-30	3460
2006-09-30	3180
2006-12-31	2820
2007-03-31	2777
2007-06-30	3196
2007-09-30	3274
2007-12-31	3373
2008-03-31	3474
2008-06-30	3415
2008-09-30	2821
2008-12-31	3138
2009-03-31	2951
2009-06-30	2991
2009-09-30	2509
2009-12-31	2876
2010-03-31	2663
2010-06-30	2600
2010-09-30	2716
2010-12-31	2344
2011-03-31	1895
2011-06-30	1803
2011-09-30	1240
2011-12-31	1668
2012-03-31	1820
2012-06-30	1724
2012-09-30	1634
2012-12-31	1651
2013-03-31	1749
2013-06-30	2160
2013-09-30	2013
2013-12-31	1709
2014-03-31	1431
2014-06-30	1122
2014-09-30	1756
2014-12-31	1489
2015-03-31	1425
2015-06-30	1375
2015-09-30	800
2015-12-31	670
2016-03-31	720
2016-06-30	698
2016-09-30	614
2016-12-31	683
2017-03-31	374
2017-06-30	1096
2017-09-30	1205
2017-12-31	1269
2018-03-31	1215
2018-06-30	1500
2018-09-30	1086
2018-12-31	259
2019-03-31	470
2019-06-30	1097
2019-09-30	1138
2019-12-31	440
2020-03-31	1157
2020-06-30	1154
2020-09-30	1162
2020-12-31	478
2021-03-31	483
2021-06-30	1049
2021-09-30	1030
2021-12-31	1156
2022-03-31	1115
2022-06-30	1180
2022-09-30	1045
2022-12-31	1173
2023-03-31	1380
2023-06-30	1368
2023-09-30	1431