Quarter	US dollars
2004-12-31	424
2005-03-31	548
2005-06-30	197
2005-09-30	172
2005-12-31	288
2006-03-31	205
2006-06-30	1056
2006-09-30	1282
2006-12-31	1270
2007-03-31	1728
2007-06-30	1168
2007-09-30	996
2007-12-31	991
2008-03-31	1191
2008-06-30	1284
2008-09-30	1490
2008-12-31	1343
2009-03-31	1493
2009-06-30	1263
2009-09-30	1545
2009-12-31	1857
2010-03-31	2597
2010-06-30	2870
2010-09-30	3090
2010-12-31	5412
2011-03-31	3982
2011-06-30	4354
2011-09-30	3563
2011-12-31	3397
2012-03-31	2428
2012-06-30	3352
2012-09-30	3772
2012-12-31	4199
2013-03-31	4497
2013-06-30	4048
2013-09-30	3404
2013-12-31	3373
2014-03-31	3143
2014-06-30	1995
2014-09-30	1806
2014-12-31	1230
2015-03-31	1568
2015-06-30	2627
2015-09-30	2993
2015-12-31	3205
2016-03-31	3721
2016-06-30	3808
2016-09-30	2868
2016-12-31	2865
2017-03-31	3148
2017-06-30	3096
2017-09-30	3909
2017-12-31	3269
2018-03-31	3827
2018-06-30	4162
2018-09-30	4573
2018-12-31	3715
2019-03-31	3771
2019-06-30	1653
2019-09-30	2565
2019-12-31	2129
2020-03-31	2510
2020-06-30	3653
2020-09-30	3072
2020-12-31	2576
2021-03-31	2707
2021-06-30	2481
2021-09-30	2697
2021-12-31	2604
2022-03-31	2402
2022-06-30	2179
2022-09-30	2615
2022-12-31	2999
2023-03-31	2640
2023-06-30	2244
2023-09-30	2510