Quarter	US dollars
2004-12-31	2356
2005-03-31	1864
2005-06-30	873
2005-09-30	1521
2005-12-31	1404
2006-03-31	1773
2006-06-30	1744
2006-09-30	2105
2006-12-31	2249
2007-03-31	2154
2007-06-30	2843
2007-09-30	3136
2007-12-31	2863
2008-03-31	3168
2008-06-30	3246
2008-09-30	3662
2008-12-31	3104
2009-03-31	3398
2009-06-30	4809
2009-09-30	3534
2009-12-31	4387
2010-03-31	4738
2010-06-30	3863
2010-09-30	5377
2010-12-31	4496
2011-03-31	3248
2011-06-30	3894
2011-09-30	3669
2011-12-31	3845
2012-03-31	3877
2012-06-30	4392
2012-09-30	3164
2012-12-31	5313
2013-03-31	5055
2013-06-30	5064
2013-09-30	5959
2013-12-31	5441
2014-03-31	4627
2014-06-30	5967
2014-09-30	5230
2014-12-31	5460
2015-03-31	4396
2015-06-30	4157
2015-09-30	4320
2015-12-31	4043
2016-03-31	3981
2016-06-30	4186
2016-09-30	5191
2016-12-31	4868
2017-03-31	4401
2017-06-30	6935
2017-09-30	7041
2017-12-31	7310
2018-03-31	6727
2018-06-30	7560
2018-09-30	7260
2018-12-31	7045
2019-03-31	5178
2019-06-30	5961
2019-09-30	5937
2019-12-31	6151
2020-03-31	6815
2020-06-30	5754
2020-09-30	5294
2020-12-31	5772
2021-03-31	6258
2021-06-30	6629
2021-09-30	5969
2021-12-31	6900
2022-03-31	6026
2022-06-30	6738
2022-09-30	6874
2022-12-31	6430
2023-03-31	6146
2023-06-30	6146
2023-09-30	6204