Quarter	US dollars
2004-12-31	505
2005-03-31	560
2005-06-30	434
2005-09-30	550
2005-12-31	572
2006-03-31	853
2006-06-30	928
2006-09-30	807
2006-12-31	1074
2007-03-31	1047
2007-06-30	797
2007-09-30	4177
2007-12-31	4567
2008-03-31	5348
2008-06-30	5387
2008-09-30	2069
2008-12-31	2185
2009-03-31	1940
2009-06-30	1625
2009-09-30	1890
2009-12-31	2319
2010-03-31	2362
2010-06-30	2678
2010-09-30	2762
2010-12-31	2578
2011-03-31	2268
2011-06-30	2485
2011-09-30	3036
2011-12-31	2537
2012-03-31	2616
2012-06-30	2616
2012-09-30	3070
2012-12-31	3222
2013-03-31	4135
2013-06-30	3676
2013-09-30	3383
2013-12-31	2691
2014-03-31	1461
2014-06-30	1676
2014-09-30	1808
2014-12-31	1793
2015-03-31	1550
2015-06-30	1480
2015-09-30	1677
2015-12-31	1480
2016-03-31	1518
2016-06-30	1402
2016-09-30	1347
2016-12-31	2087
2017-03-31	1411
2017-06-30	3732
2017-09-30	3591
2017-12-31	3626
2018-03-31	3706
2018-06-30	4271
2018-09-30	4220
2018-12-31	4318
2019-03-31	4206
2019-06-30	3948
2019-09-30	4960
2019-12-31	3630
2020-03-31	3214
2020-06-30	3708
2020-09-30	3178
2020-12-31	2950
2021-03-31	2620
2021-06-30	2691
2021-09-30	2643
2021-12-31	2551
2022-03-31	3731
2022-06-30	2888
2022-09-30	2722
2022-12-31	2778
2023-03-31	3016
2023-06-30	2986
2023-09-30	3200