Quarter	US dollars
2004-12-31	403
2005-03-31	558
2005-06-30	552
2005-09-30	608
2005-12-31	580
2006-03-31	421
2006-06-30	316
2006-09-30	245
2006-12-31	2820
2007-03-31	3032
2007-06-30	3286
2007-09-30	3494
2007-12-31	3080
2008-03-31	3603
2008-06-30	3668
2008-09-30	3748
2008-12-31	3272
2009-03-31	2948
2009-06-30	2910
2009-09-30	408
2009-12-31	767
2010-03-31	2088
2010-06-30	1074
2010-09-30	2297
2010-12-31	1188
2011-03-31	2661
2011-06-30	6270
2011-09-30	4264
2011-12-31	5213
2012-03-31	5728
2012-06-30	5509
2012-09-30	4746
2012-12-31	5245
2013-03-31	2802
2013-06-30	3000
2013-09-30	2181
2013-12-31	3668
2014-03-31	1802
2014-06-30	4196
2014-09-30	2583
2014-12-31	3201
2015-03-31	3057
2015-06-30	2683
2015-09-30	3175
2015-12-31	3248
2016-03-31	2500
2016-06-30	1620
2016-09-30	2267
2016-12-31	2130
2017-03-31	2206
2017-06-30	1365
2017-09-30	1939
2017-12-31	1693
2018-03-31	2802
2018-06-30	1755
2018-09-30	2615
2018-12-31	3432
2019-03-31	3999
2019-06-30	2264
2019-09-30	1796
2019-12-31	6193
2020-03-31	4530
2020-06-30	3901
2020-09-30	2799
2020-12-31	3296
2021-03-31	2028
2021-06-30	2894
2021-09-30	1454
2021-12-31	2496
2022-03-31	2282
2022-06-30	2411
2022-09-30	938
2022-12-31	1717
2023-03-31	1043
2023-06-30	1230
2023-09-30	673