Quarter	US dollars
2004-12-31	1738
2005-03-31	1357
2005-06-30	2278
2005-09-30	3108
2005-12-31	2784
2006-03-31	3237
2006-06-30	2561
2006-09-30	1795
2006-12-31	2270
2007-03-31	2675
2007-06-30	2137
2007-09-30	1699
2007-12-31	1055
2008-03-31	2687
2008-06-30	2478
2008-09-30	3142
2008-12-31	2540
2009-03-31	2517
2009-06-30	2368
2009-09-30	2401
2009-12-31	2275
2010-03-31	3149
2010-06-30	2985
2010-09-30	4142
2010-12-31	3186
2011-03-31	4416
2011-06-30	3067
2011-09-30	2814
2011-12-31	2177
2012-03-31	1478
2012-06-30	1474
2012-09-30	1721
2012-12-31	1698
2013-03-31	2441
2013-06-30	1602
2013-09-30	704
2013-12-31	1400
2014-03-31	1641
2014-06-30	1611
2014-09-30	1511
2014-12-31	1962
2015-03-31	2092
2015-06-30	2594
2015-09-30	2442
2015-12-31	1848
2016-03-31	1758
2016-06-30	2228
2016-09-30	1681
2016-12-31	1069
2017-03-31	1133
2017-06-30	2019
2017-09-30	949
2017-12-31	789
2018-03-31	1384
2018-06-30	1327
2018-09-30	874
2018-12-31	1057
2019-03-31	861
2019-06-30	862
2019-09-30	925
2019-12-31	888
2020-03-31	1193
2020-06-30	907
2020-09-30	946
2020-12-31	652
2021-03-31	784
2021-06-30	924
2021-09-30	1080
2021-12-31	825
2022-03-31	740
2022-06-30	752
2022-09-30	622
2022-12-31	548
2023-03-31	849
2023-06-30	2284
2023-09-30	1698