Quarter	US dollars
2004-12-31	25738
2005-03-31	30776
2005-06-30	31285
2005-09-30	35344
2005-12-31	28978
2006-03-31	34385
2006-06-30	40132
2006-09-30	42372
2006-12-31	43350
2007-03-31	49878
2007-06-30	53081
2007-09-30	61218
2007-12-31	63412
2008-03-31	71759
2008-06-30	64782
2008-09-30	55272
2008-12-31	76142
2009-03-31	64581
2009-06-30	63861
2009-09-30	69379
2009-12-31	63040
2010-03-31	54504
2010-06-30	58361
2010-09-30	85261
2010-12-31	68279
2011-03-31	73422
2011-06-30	75179
2011-09-30	72109
2011-12-31	67674
2012-03-31	68261
2012-06-30	68084
2012-09-30	69922
2012-12-31	74134
2013-03-31	68597
2013-06-30	62863
2013-09-30	64075
2013-12-31	59126
2014-03-31	51101
2014-06-30	53806
2014-09-30	49028
2014-12-31	47656
2015-03-31	54747
2015-06-30	44500
2015-09-30	40432
2015-12-31	34516
2016-03-31	41885
2016-06-30	39607
2016-09-30	38960
2016-12-31	32704
2017-03-31	32807
2017-06-30	35582
2017-09-30	33642
2017-12-31	33563
2018-03-31	33010
2018-06-30	29480
2018-09-30	31150
2018-12-31	28753
2019-03-31	32821
2019-06-30	36336
2019-09-30	44154
2019-12-31	39981
2020-03-31	43631
2020-06-30	44460
2020-09-30	47511
2020-12-31	48455
2021-03-31	38353
2021-06-30	38686
2021-09-30	41595
2021-12-31	37639
2022-03-31	36654
2022-06-30	26216
2022-09-30	25205
2022-12-31	28499
2023-03-31	30443
2023-06-30	33360
2023-09-30	32504