Quarter	US dollars
2004-12-31	4648
2005-03-31	5269
2005-06-30	3667
2005-09-30	3428
2005-12-31	3560
2006-03-31	4942
2006-06-30	4392
2006-09-30	4555
2006-12-31	4163
2007-03-31	4817
2007-06-30	5981
2007-09-30	6607
2007-12-31	6289
2008-03-31	5301
2008-06-30	6165
2008-09-30	4436
2008-12-31	3374
2009-03-31	2484
2009-06-30	3244
2009-09-30	2514
2009-12-31	3079
2010-03-31	3881
2010-06-30	6244
2010-09-30	6776
2010-12-31	7482
2011-03-31	7024
2011-06-30	7641
2011-09-30	6514
2011-12-31	4578
2012-03-31	4181
2012-06-30	4240
2012-09-30	3730
2012-12-31	2989
2013-03-31	3836
2013-06-30	4374
2013-09-30	2669
2013-12-31	2430
2014-03-31	2646
2014-06-30	1923
2014-09-30	1735
2014-12-31	1403
2015-03-31	1633
2015-06-30	3242
2015-09-30	4100
2015-12-31	2558
2016-03-31	2798
2016-06-30	2550
2016-09-30	1907
2016-12-31	1943
2017-03-31	1901
2017-06-30	1416
2017-09-30	1689
2017-12-31	2093
2018-03-31	2537
2018-06-30	2542
2018-09-30	2886
2018-12-31	7870
2019-03-31	8468
2019-06-30	1055
2019-09-30	1153
2019-12-31	750
2020-03-31	867
2020-06-30	1677
2020-09-30	862
2020-12-31	1040
2021-03-31	2181
2021-06-30	1937
2021-09-30	1970
2021-12-31	1937
2022-03-31	1445
2022-06-30	1658
2022-09-30	1890
2022-12-31	2050
2023-03-31	2209
2023-06-30	1732
2023-09-30	1932