Quarter	US dollars
2004-12-31	5441
2005-03-31	6788
2005-06-30	4549
2005-09-30	4781
2005-12-31	4707
2006-03-31	6043
2006-06-30	5241
2006-09-30	5253
2006-12-31	5037
2007-03-31	8665
2007-06-30	6978
2007-09-30	6829
2007-12-31	5628
2008-03-31	5986
2008-06-30	5749
2008-09-30	4580
2008-12-31	4093
2009-03-31	3534
2009-06-30	3783
2009-09-30	2516
2009-12-31	1597
2010-03-31	1593
2010-06-30	2312
2010-09-30	3162
2010-12-31	1277
2011-03-31	2025
2011-06-30	2681
2011-09-30	3650
2011-12-31	1494
2012-03-31	2447
2012-06-30	3107
2012-09-30	2828
2012-12-31	3547
2013-03-31	4196
2013-06-30	3919
2013-09-30	4763
2013-12-31	4187
2014-03-31	3953
2014-06-30	5230
2014-09-30	3442
2014-12-31	3557
2015-03-31	2989
2015-06-30	3014
2015-09-30	2081
2015-12-31	2968
2016-03-31	2858
2016-06-30	2813
2016-09-30	2658
2016-12-31	1540
2017-03-31	849
2017-06-30	1229
2017-09-30	2982
2017-12-31	1478
2018-03-31	2063
2018-06-30	854
2018-09-30	436
2018-12-31	803
2019-03-31	1418
2019-06-30	2463
2019-09-30	2914
2019-12-31	2168
2020-03-31	2727
2020-06-30	2429
2020-09-30	1791
2020-12-31	1452
2021-03-31	1973
2021-06-30	1828
2021-09-30	1939
2021-12-31	1220
2022-03-31	2370
2022-06-30	2978
2022-09-30	1836
2022-12-31	1133
2023-03-31	2137
2023-06-30	1852
2023-09-30	2199