Quarter	US dollars
2004-12-31	480
2005-03-31	1011
2005-06-30	749
2005-09-30	642
2005-12-31	1682
2006-03-31	5143
2006-06-30	5250
2006-09-30	6047
2006-12-31	6354
2007-03-31	2775
2007-06-30	2967
2007-09-30	3156
2007-12-31	2556
2008-03-31	3866
2008-06-30	3349
2008-09-30	2784
2008-12-31	2934
2009-03-31	2365
2009-06-30	1835
2009-09-30	1644
2009-12-31	1361
2010-03-31	1503
2010-06-30	1848
2010-09-30	1650
2010-12-31	2210
2011-03-31	2082
2011-06-30	1835
2011-09-30	2050
2011-12-31	999
2012-03-31	1376
2012-06-30	2086
2012-09-30	2335
2012-12-31	2281
2013-03-31	2957
2013-06-30	2700
2013-09-30	2845
2013-12-31	2261
2014-03-31	2464
2014-06-30	2423
2014-09-30	2339
2014-12-31	2223
2015-03-31	2221
2015-06-30	1960
2015-09-30	1725
2015-12-31	1789
2016-03-31	1789
2016-06-30	2091
2016-09-30	2046
2016-12-31	2467
2017-03-31	2473
2017-06-30	2953
2017-09-30	4021
2017-12-31	2701
2018-03-31	2174
2018-06-30	3454
2018-09-30	2753
2018-12-31	3156
2019-03-31	2622
2019-06-30	1499
2019-09-30	2019
2019-12-31	2052
2020-03-31	2039
2020-06-30	1563
2020-09-30	1709
2020-12-31	1615
2021-03-31	1616
2021-06-30	1462
2021-09-30	1377
2021-12-31	1945
2022-03-31	2173
2022-06-30	1373
2022-09-30	1871
2022-12-31	1574
2023-03-31	1683
2023-06-30	2301
2023-09-30	2497