Quarter	US dollars
2004-12-31	1883
2005-03-31	1847
2005-06-30	2710
2005-09-30	1928
2005-12-31	2384
2006-03-31	1677
2006-06-30	1892
2006-09-30	1726
2006-12-31	1012
2007-03-31	2565
2007-06-30	696
2007-09-30	4633
2007-12-31	2726
2008-03-31	3901
2008-06-30	1867
2008-09-30	2459
2008-12-31	1558
2009-03-31	1853
2009-06-30	2602
2009-09-30	2343
2009-12-31	2771
2010-03-31	4671
2010-06-30	4768
2010-09-30	3162
2010-12-31	2074
2011-03-31	1069
2011-06-30	1407
2011-09-30	2859
2011-12-31	2101
2012-03-31	3877
2012-06-30	4196
2012-09-30	4861
2012-12-31	4247
2013-03-31	3857
2013-06-30	3520
2013-09-30	2277
2013-12-31	960
2014-03-31	1070
2014-06-30	877
2014-09-30	965
2014-12-31	830
2015-03-31	1713
2015-06-30	1754
2015-09-30	1571
2015-12-31	3522
2016-03-31	4323
2016-06-30	4377
2016-09-30	470
2016-12-31	515
2017-03-31	1530
2017-06-30	691
2017-09-30	2529
2017-12-31	1244
2018-03-31	588
2018-06-30	1398
2018-09-30	1762
2018-12-31	720
2019-03-31	1353
2019-06-30	2420
2019-09-30	2326
2019-12-31	1828
2020-03-31	2364
2020-06-30	2117
2020-09-30	1948
2020-12-31	2217
2021-03-31	1871
2021-06-30	2402
2021-09-30	1803
2021-12-31	2327
2022-03-31	2205
2022-06-30	3441
2022-09-30	2977
2022-12-31	2468
2023-03-31	2288
2023-06-30	2345
2023-09-30	3334