Quarter	US dollars
2004-12-31	1697
2005-03-31	1433
2005-06-30	1206
2005-09-30	1067
2005-12-31	1035
2006-03-31	1048
2007-12-31	2252
2008-03-31	2264
2008-12-31	1573
2009-09-30	1459
2009-12-31	1583
2010-06-30	1587
2010-12-31	1257
2011-06-30	963
2011-09-30	1284
2011-12-31	991
2012-03-31	1114
2012-06-30	955
2012-09-30	1101
2012-12-31	1044
2013-03-31	1020
2013-06-30	1110
2013-09-30	2210
2013-12-31	1840
2014-03-31	1724
2014-06-30	1710
2014-09-30	1375
2014-12-31	1216
2015-03-31	1079
2015-06-30	1120
2015-09-30	989
2015-12-31	2353
2016-03-31	2394
2016-06-30	1676
2016-09-30	1563
2016-12-31	2977
2017-03-31	2920
2017-06-30	2306
2017-09-30	2250
2017-12-31	2018
2018-03-31	3004
2018-06-30	2634
2018-09-30	1858
2018-12-31	1710
2019-03-31	1680
2019-06-30	2406
2019-09-30	1906
2019-12-31	1945
2020-03-31	1688
2020-06-30	978
2020-09-30	1652
2020-12-31	1048
2021-03-31	1380
2021-06-30	556
2021-09-30	560
2021-12-31	360
2022-03-31	255
2022-06-30	367
2022-09-30	274
2022-12-31	233
2023-03-31	294
2023-06-30	368
2023-09-30	400