Quarter	US dollars
2004-12-31	899
2005-03-31	919
2005-06-30	807
2005-09-30	1203
2005-12-31	908
2006-03-31	1124
2006-06-30	1533
2006-09-30	1513
2006-12-31	1654
2007-03-31	1989
2007-06-30	2251
2007-09-30	5768
2007-12-31	8728
2008-03-31	8721
2008-06-30	8750
2008-09-30	3853
2008-12-31	2662
2009-03-31	2620
2009-06-30	2740
2009-09-30	3058
2009-12-31	3368
2010-03-31	3056
2010-06-30	3576
2010-09-30	3731
2010-12-31	4062
2011-03-31	4609
2011-06-30	4139
2011-09-30	4719
2011-12-31	4459
2012-03-31	5776
2012-06-30	5184
2012-09-30	4522
2012-12-31	5633
2013-03-31	5984
2013-06-30	6317
2013-09-30	8108
2013-12-31	8752
2014-03-31	8171
2014-06-30	7559
2014-09-30	10575
2014-12-31	15343
2015-03-31	14612
2015-06-30	14148
2015-09-30	13476
2015-12-31	13004
2016-03-31	13954
2016-06-30	18038
2016-09-30	13131
2016-12-31	15712
2017-03-31	16858
2017-06-30	16656
2017-09-30	16338
2017-12-31	16003
2018-03-31	5988
2018-06-30	7910
2018-09-30	6773
2018-12-31	7435
2019-03-31	6726
2019-06-30	6794
2019-09-30	8841
2019-12-31	9625
2020-03-31	8139
2020-06-30	7382
2020-09-30	7124
2020-12-31	5596
2021-03-31	5627
2021-06-30	4816
2021-09-30	5500
2021-12-31	4175
2022-03-31	4322
2022-06-30	3653
2022-09-30	3087
2022-12-31	2209
2023-03-31	3707
2023-06-30	3078
2023-09-30	2850