Quarter	US dollars
2004-12-31	2450
2005-03-31	3236
2005-06-30	1049
2005-09-30	493
2005-12-31	4407
2006-03-31	1948
2006-06-30	1648
2006-09-30	2098
2006-12-31	1820
2007-03-31	2412
2007-06-30	5347
2007-09-30	4299
2007-12-31	2642
2008-03-31	4118
2008-06-30	2677
2008-09-30	1558
2008-12-31	1336
2009-03-31	1152
2009-06-30	2314
2009-09-30	1084
2009-12-31	2062
2010-03-31	1373
2010-06-30	5953
2010-09-30	7981
2010-12-31	6732
2011-03-31	7582
2011-06-30	7826
2011-09-30	5665
2011-12-31	4250
2012-03-31	5664
2012-06-30	3958
2012-09-30	4443
2012-12-31	2034
2013-03-31	2393
2013-06-30	3184
2013-09-30	2061
2013-12-31	1993
2014-03-31	2673
2014-06-30	2763
2014-09-30	1352
2014-12-31	1461
2015-03-31	1822
2015-06-30	1667
2015-09-30	1172
2015-12-31	1177
2016-03-31	2001
2016-06-30	1182
2016-09-30	1030
2016-12-31	1578
2017-03-31	2061
2017-06-30	1648
2017-09-30	1933
2017-12-31	1816
2018-03-31	1525
2018-06-30	1098
2018-09-30	1599
2018-12-31	1203
2019-03-31	2107
2019-06-30	2742
2019-09-30	2033
2019-12-31	1053
2020-03-31	836
2020-06-30	1487
2020-09-30	2303
2020-12-31	1553
2021-03-31	1378
2021-06-30	1745
2021-09-30	1402
2021-12-31	1767
2022-03-31	2514
2022-06-30	2606
2022-09-30	3098
2022-12-31	2159
2023-03-31	2181
2023-06-30	3742
2023-09-30	3392