Quarter	US dollars
2004-12-31	1405
2005-03-31	2526
2005-06-30	1690
2005-09-30	1243
2005-12-31	1401
2006-03-31	3063
2006-06-30	1670
2006-09-30	1780
2006-12-31	2037
2007-03-31	2644
2007-06-30	2073
2007-09-30	2712
2007-12-31	3191
2008-03-31	4454
2008-06-30	3031
2008-09-30	2744
2008-12-31	2494
2009-03-31	2816
2009-06-30	2511
2009-09-30	2394
2009-12-31	2157
2010-03-31	2066
2010-06-30	2207
2010-09-30	1869
2010-12-31	1980
2011-03-31	2137
2011-06-30	1803
2011-09-30	1855
2011-12-31	1838
2012-03-31	2057
2012-06-30	2543
2012-09-30	2283
2012-12-31	2771
2013-03-31	2476
2013-06-30	2436
2013-09-30	2536
2013-12-31	2525
2014-03-31	2778
2014-06-30	2294
2014-09-30	2503
2014-12-31	2265
2015-03-31	2283
2015-06-30	1864
2015-09-30	1630
2015-12-31	1375
2016-03-31	1889
2016-06-30	1697
2016-09-30	1685
2016-12-31	1641
2017-03-31	2072
2017-06-30	1889
2017-09-30	1951
2017-12-31	1656
2018-03-31	2244
2018-06-30	2151
2018-09-30	1830
2018-12-31	2055
2019-03-31	3063
2019-06-30	1893
2019-09-30	1790
2019-12-31	1811
2020-03-31	1487
2020-06-30	1984
2020-09-30	2668
2020-12-31	2169
2021-03-31	1569
2021-06-30	2054
2021-09-30	2205
2021-12-31	1791
2022-03-31	1547
2022-06-30	1332
2022-09-30	1395
2022-12-31	1428
2023-03-31	1244
2023-06-30	1504
2023-09-30	1119