Quarter	US dollars
2004-12-31	641
2005-03-31	1100
2005-06-30	303
2005-09-30	237
2005-12-31	275
2006-03-31	373
2006-06-30	390
2006-09-30	574
2006-12-31	650
2007-03-31	1679
2007-06-30	435
2007-09-30	318
2007-12-31	360
2008-03-31	364
2008-06-30	661
2008-09-30	763
2008-12-31	710
2009-03-31	725
2009-06-30	858
2009-09-30	920
2009-12-31	785
2010-03-31	1131
2010-06-30	1300
2010-09-30	1468
2010-12-31	1392
2011-03-31	1499
2011-06-30	1694
2011-09-30	1162
2011-12-31	1062
2012-03-31	853
2012-06-30	1821
2012-09-30	2069
2012-12-31	2344
2013-03-31	1946
2013-06-30	1732
2013-09-30	2138
2013-12-31	1527
2014-03-31	1424
2014-06-30	1364
2014-09-30	958
2014-12-31	929
2015-03-31	1136
2015-06-30	1051
2015-09-30	1081
2015-12-31	2164
2016-03-31	2171
2016-06-30	2119
2016-09-30	2086
2016-12-31	1984
2017-03-31	2132
2017-06-30	1729
2017-09-30	2235
2017-12-31	1567
2018-03-31	1605
2018-06-30	1588
2018-09-30	1772
2018-12-31	1343
2019-03-31	1661
2019-06-30	797
2019-09-30	1899
2019-12-31	2103
2020-03-31	2065
2020-06-30	2483
2020-09-30	2232
2020-12-31	1848
2021-03-31	1578
2021-06-30	1661
2021-09-30	1735
2021-12-31	1821
2022-03-31	1777
2022-06-30	1434
2022-09-30	1830
2022-12-31	2132
2023-03-31	1858
2023-06-30	1693
2023-09-30	1585