Quarter	US dollars
2004-12-31	1570
2005-03-31	1391
2005-06-30	912
2005-09-30	769
2005-12-31	711
2006-03-31	683
2006-06-30	523
2006-09-30	650
2006-12-31	1626
2007-03-31	1626
2007-06-30	1170
2007-09-30	1176
2007-12-31	1149
2008-03-31	906
2008-06-30	2494
2008-09-30	1370
2008-12-31	1183
2009-03-31	969
2009-06-30	825
2009-09-30	926
2009-12-31	896
2010-03-31	1107
2010-06-30	1145
2010-09-30	1476
2010-12-31	1099
2011-03-31	1003
2011-06-30	1076
2011-09-30	977
2011-12-31	1070
2012-03-31	1040
2012-06-30	894
2012-09-30	1620
2012-12-31	2002
2013-03-31	1415
2013-06-30	1791
2013-09-30	1990
2013-12-31	1511
2014-03-31	1541
2014-06-30	1484
2014-09-30	1128
2014-12-31	974
2015-03-31	971
2015-06-30	991
2015-09-30	906
2015-12-31	2934
2016-03-31	3190
2016-06-30	2523
2016-09-30	2431
2016-12-31	3808
2017-03-31	3554
2017-06-30	2795
2017-09-30	3117
2017-12-31	2505
2018-03-31	3606
2018-06-30	2646
2018-09-30	2902
2018-12-31	2417
2019-03-31	1673
2019-06-30	2435
2019-09-30	2135
2019-12-31	3577
2020-03-31	3304
2020-06-30	3019
2020-09-30	3364
2020-12-31	2410
2021-03-31	2463
2021-06-30	1784
2021-09-30	1210
2021-12-31	1864
2022-03-31	1768
2022-06-30	1513
2022-09-30	1875
2022-12-31	2135
2023-03-31	1879
2023-06-30	1808
2023-09-30	1597