Quarter	US dollars
2004-12-31	847
2005-03-31	947
2005-06-30	937
2005-09-30	1180
2005-12-31	1572
2006-03-31	1655
2006-06-30	2369
2006-09-30	2380
2006-12-31	3086
2007-03-31	3103
2007-06-30	3571
2007-09-30	3572
2007-12-31	4426
2008-03-31	3476
2008-06-30	3240
2008-09-30	3133
2008-12-31	2353
2009-03-31	2946
2009-06-30	2635
2009-09-30	2940
2009-12-31	2590
2010-03-31	3752
2010-06-30	4068
2010-09-30	4979
2010-12-31	5011
2011-03-31	5628
2011-06-30	6557
2011-09-30	5756
2011-12-31	5037
2012-03-31	5779
2012-06-30	7131
2012-09-30	8354
2012-12-31	10619
2013-03-31	8520
2013-06-30	7424
2013-09-30	5692
2013-12-31	4811
2014-03-31	3113
2014-06-30	2691
2014-09-30	2775
2014-12-31	3768
2015-03-31	3005
2015-06-30	2289
2015-09-30	2430
2015-12-31	2287
2016-03-31	2436
2016-06-30	2534
2016-09-30	4279
2016-12-31	1809
2017-03-31	2212
2017-06-30	2527
2017-09-30	2824
2017-12-31	2528
2018-03-31	2252
2018-06-30	2046
2018-09-30	2315
2018-12-31	2537
2019-03-31	3080
2019-06-30	3064
2019-09-30	2521
2019-12-31	2519
2020-03-31	2245
2020-06-30	2620
2020-09-30	2772
2020-12-31	3460
2021-03-31	2750
2021-06-30	1987
2021-09-30	2153
2021-12-31	1338
2022-03-31	1012
2022-06-30	1086
2022-09-30	844
2022-12-31	1214
2023-03-31	1927
2023-06-30	1578
2023-09-30	1601