Quarter	US dollars
2004-12-31	678
2005-03-31	696
2005-06-30	778
2005-09-30	1033
2005-12-31	1188
2006-03-31	1759
2006-06-30	1836
2006-09-30	1853
2006-12-31	2378
2007-03-31	2436
2007-06-30	2723
2007-09-30	2634
2007-12-31	3259
2008-03-31	4931
2008-06-30	4876
2008-09-30	4102
2008-12-31	3787
2009-03-31	4047
2009-06-30	3903
2009-09-30	4512
2009-12-31	4906
2010-03-31	5642
2010-06-30	5555
2010-09-30	5406
2010-12-31	5543
2011-03-31	4979
2011-06-30	4855
2011-09-30	5108
2011-12-31	4464
2012-03-31	4625
2012-06-30	4497
2012-09-30	4785
2012-12-31	4768
2013-03-31	5356
2013-06-30	4050
2013-09-30	4654
2013-12-31	5067
2014-03-31	4859
2014-06-30	4613
2014-09-30	4825
2014-12-31	5898
2015-03-31	5597
2015-06-30	5203
2015-09-30	5615
2015-12-31	5800
2016-03-31	5343
2016-06-30	5364
2016-09-30	5958
2016-12-31	3429
2017-03-31	3454
2017-06-30	3363
2017-09-30	3858
2017-12-31	4030
2018-03-31	4676
2018-06-30	4275
2018-09-30	3333
2018-12-31	3642
2019-03-31	4997
2019-06-30	3696
2019-09-30	4047
2019-12-31	4266
2020-03-31	4719
2020-06-30	4574
2020-09-30	6068
2020-12-31	6602
2021-03-31	6953
2021-06-30	7899
2021-09-30	8878
2021-12-31	8121
2022-03-31	6828
2022-06-30	6075
2022-09-30	7032
2022-12-31	6730
2023-03-31	6297
2023-06-30	5417
2023-09-30	5930