Quarter	US dollars
2004-12-31	3093
2005-03-31	4030
2005-06-30	3809
2005-09-30	3925
2005-12-31	3074
2006-03-31	3308
2006-06-30	3333
2006-09-30	3090
2006-12-31	2838
2007-03-31	3776
2007-06-30	4446
2007-09-30	3812
2007-12-31	3371
2008-03-31	4088
2008-06-30	3948
2008-09-30	3192
2008-12-31	5374
2009-03-31	5287
2009-06-30	5382
2009-09-30	5708
2009-12-31	3383
2010-03-31	3086
2010-06-30	5014
2010-09-30	5324
2010-12-31	3652
2011-03-31	3955
2011-06-30	3739
2011-09-30	3139
2011-12-31	3638
2012-03-31	3749
2012-06-30	3158
2012-09-30	3159
2012-12-31	2016
2013-03-31	2311
2013-06-30	1941
2013-09-30	1757
2013-12-31	1585
2014-03-31	2039
2014-06-30	1929
2014-09-30	1848
2014-12-31	1693
2015-03-31	1353
2015-06-30	1650
2015-09-30	785
2015-12-31	662
2016-03-31	903
2016-06-30	1669
2016-09-30	1520
2016-12-31	2046
2017-03-31	2384
2017-06-30	1464
2017-09-30	1422
2017-12-31	1608
2018-03-31	1864
2018-06-30	1963
2018-09-30	2611
2018-12-31	1817
2019-03-31	1902
2019-06-30	2112
2019-09-30	1540
2019-12-31	1092
2020-03-31	2889
2020-06-30	1462
2020-09-30	1563
2020-12-31	1602
2021-03-31	1580
2021-06-30	1875
2021-09-30	1881
2021-12-31	1050
2022-03-31	2106
2022-06-30	1299
2022-09-30	2384
2022-12-31	1860
2023-03-31	1950
2023-06-30	1107
2023-09-30	1521