Quarter	US dollars
2004-12-31	296
2005-03-31	295
2005-06-30	296
2005-09-30	699
2005-12-31	899
2006-03-31	992
2006-06-30	962
2006-09-30	1065
2006-12-31	1427
2007-03-31	1304
2007-06-30	1386
2007-09-30	1618
2007-12-31	1754
2008-03-31	1602
2008-06-30	1970
2008-09-30	1722
2008-12-31	1269
2009-03-31	1326
2009-06-30	1672
2009-09-30	1404
2009-12-31	1374
2010-03-31	1414
2010-06-30	1414
2010-09-30	1353
2010-12-31	2232
2011-03-31	2112
2011-06-30	2146
2011-09-30	2318
2011-12-31	2175
2012-03-31	2125
2012-06-30	2365
2012-09-30	2405
2012-12-31	3007
2013-03-31	5878
2013-06-30	6036
2013-09-30	5951
2013-12-31	5319
2014-03-31	5917
2014-06-30	4498
2014-09-30	4753
2014-12-31	4636
2015-03-31	5207
2015-06-30	6400
2015-09-30	6733
2015-12-31	6630
2016-03-31	7986
2016-06-30	8068
2016-09-30	7252
2016-12-31	6865
2017-03-31	6990
2017-06-30	6759
2017-09-30	6638
2017-12-31	6640
2018-03-31	7426
2018-06-30	7489
2018-09-30	7302
2018-12-31	8767
2019-03-31	9008
2019-06-30	8736
2019-09-30	10134
2019-12-31	9857
2020-03-31	10007
2020-06-30	9759
2020-09-30	9798
2020-12-31	8241
2021-03-31	7849
2021-06-30	6948
2021-09-30	6938
2021-12-31	6699
2022-03-31	6952
2022-06-30	6901
2022-09-30	4981
2022-12-31	6939
2023-03-31	6792
2023-06-30	6063
2023-09-30	6533