Quarter	US dollars
2004-12-31	1221
2005-03-31	1992
2005-06-30	1490
2005-09-30	1346
2005-12-31	2000
2006-03-31	1178
2006-06-30	1154
2006-09-30	1173
2006-12-31	1284
2007-03-31	1544
2007-06-30	1826
2007-09-30	2186
2007-12-31	3442
2008-03-31	3868
2008-06-30	2782
2008-09-30	2719
2008-12-31	1578
2009-03-31	1469
2009-06-30	1268
2009-09-30	1060
2009-12-31	1054
2010-03-31	2123
2010-06-30	2573
2010-09-30	1870
2010-12-31	1908
2011-03-31	1941
2011-06-30	2330
2011-09-30	2751
2011-12-31	2591
2012-03-31	3412
2012-06-30	2086
2012-09-30	1969
2012-12-31	2107
2013-03-31	2198
2013-06-30	2155
2013-09-30	2068
2013-12-31	2405
2014-03-31	2149
2014-06-30	2154
2014-09-30	2495
2014-12-31	2722
2015-03-31	3563
2015-06-30	3581
2015-09-30	3747
2015-12-31	2654
2016-03-31	2227
2016-06-30	2564
2016-09-30	2021
2016-12-31	1602
2017-03-31	1847
2017-06-30	2641
2017-09-30	2906
2017-12-31	3306
2018-03-31	3018
2018-06-30	2039
2018-09-30	1943
2018-12-31	1869
2019-03-31	2495
2019-06-30	3200
2019-09-30	2856
2019-12-31	2996
2020-03-31	3928
2020-06-30	3543
2020-09-30	3667
2020-12-31	3534
2021-03-31	3902
2021-06-30	4155
2021-09-30	3380
2021-12-31	3182
2022-03-31	2940
2022-06-30	3116
2022-09-30	3154
2022-12-31	2475
2023-03-31	2373
2023-06-30	2713
2023-09-30	5193