Quarter	US dollars
2004-12-31	2452
2005-03-31	2448
2005-06-30	1814
2005-09-30	2752
2005-12-31	2077
2006-03-31	2241
2006-06-30	2090
2006-09-30	1702
2006-12-31	2251
2007-03-31	3093
2007-06-30	2446
2007-09-30	3409
2007-12-31	5037
2008-03-31	7471
2008-06-30	5013
2008-09-30	6271
2008-12-31	4379
2009-03-31	4023
2009-06-30	5140
2009-09-30	4041
2009-12-31	4113
2010-03-31	4797
2010-06-30	5499
2010-09-30	7510
2010-12-31	8581
2011-03-31	8435
2011-06-30	6544
2011-09-30	8617
2011-12-31	5016
2012-03-31	4315
2012-06-30	4293
2012-09-30	4699
2012-12-31	5051
2013-03-31	3264
2013-06-30	2880
2013-09-30	3529
2013-12-31	3415
2014-03-31	4057
2014-06-30	3170
2014-09-30	4860
2014-12-31	4990
2015-03-31	5628
2015-06-30	5971
2015-09-30	6700
2015-12-31	7538
2016-03-31	11062
2016-06-30	12878
2016-09-30	15002
2016-12-31	13754
2017-03-31	12833
2017-06-30	12085
2017-09-30	14876
2017-12-31	16363
2018-03-31	15919
2018-06-30	14312
2018-09-30	11863
2018-12-31	12175
2019-03-31	11107
2019-06-30	9279
2019-09-30	7132
2019-12-31	7643
2020-03-31	9533
2020-06-30	9232
2020-09-30	5659
2020-12-31	10257
2021-03-31	7608
2021-06-30	8667
2021-09-30	8007
2021-12-31	7924
2022-03-31	8429
2022-06-30	9536
2022-09-30	11486
2022-12-31	11533
2023-03-31	10387
2023-06-30	12299
2023-09-30	10919