Quarter	US dollars
2004-12-31	939
2005-03-31	1000
2005-06-30	948
2005-09-30	768
2005-12-31	997
2006-03-31	1004
2006-06-30	1050
2006-09-30	1057
2006-12-31	1088
2007-03-31	1085
2007-06-30	1100
2007-09-30	1196
2007-12-31	1204
2008-03-31	1292
2008-06-30	1335
2008-09-30	1410
2008-12-31	1475
2009-03-31	1303
2009-06-30	1518
2009-09-30	1550
2009-12-31	1563
2010-03-31	1541
2010-06-30	1535
2010-09-30	1668
2010-12-31	1722
2011-03-31	1768
2011-06-30	1851
2011-09-30	1845
2011-12-31	2044
2012-03-31	2074
2012-06-30	1981
2012-09-30	2130
2012-12-31	2103
2013-03-31	2030
2013-06-30	2017
2013-09-30	2094
2013-12-31	2073
2014-03-31	1994
2014-06-30	1990
2014-09-30	1887
2014-12-31	1820
2015-03-31	1709
2015-06-30	1677
2015-09-30	1586
2015-12-31	1420
2016-03-31	1398
2016-06-30	1291
2016-09-30	1319
2016-12-31	1347
2017-03-31	874
2017-06-30	761
2017-09-30	526
2017-12-31	450
2018-03-31	442
2018-06-30	386
2018-09-30	394
2018-12-31	433
2019-03-31	417
2019-06-30	487
2019-09-30	564
2019-12-31	939
2020-03-31	610
2020-06-30	501
2020-09-30	423
2020-12-31	437
2021-03-31	421
2021-06-30	392
2021-09-30	402
2021-12-31	384
2022-03-31	378
2022-06-30	371
2022-09-30	367
2022-12-31	387
2023-03-31	383
2023-06-30	379
2023-09-30	387