Quarter	US dollars
2004-12-31	32717
2005-03-31	35696
2005-06-30	35178
2005-09-30	38813
2005-12-31	37889
2006-03-31	42988
2006-06-30	43842
2006-09-30	49448
2006-12-31	51845
2007-03-31	51604
2007-06-30	56031
2007-09-30	65020
2007-12-31	60882
2008-03-31	55346
2008-06-30	57603
2008-09-30	53123
2008-12-31	46700
2009-03-31	44257
2009-06-30	41844
2009-09-30	45443
2009-12-31	43206
2010-03-31	44913
2010-06-30	44298
2010-09-30	44301
2010-12-31	40762
2011-03-31	43810
2011-06-30	41752
2011-09-30	28281
2011-12-31	28751
2012-03-31	32640
2012-06-30	30850
2012-09-30	29840
2012-12-31	26874
2013-03-31	26215
2013-06-30	26260
2013-09-30	25902
2013-12-31	26592
2014-03-31	21728
2014-06-30	22149
2014-09-30	22163
2014-12-31	21129
2015-03-31	22202
2015-06-30	23152
2015-09-30	19812
2015-12-31	16222
2016-03-31	15886
2016-06-30	13178
2016-09-30	15275
2016-12-31	13814
2017-03-31	13360
2017-06-30	16050
2017-09-30	15504
2017-12-31	15669
2018-03-31	16536
2018-06-30	16673
2018-09-30	18030
2018-12-31	18570
2019-03-31	17752
2019-06-30	17281
2019-09-30	15927
2019-12-31	17553
2020-03-31	18412
2020-06-30	18693
2020-09-30	18060
2020-12-31	20781
2021-03-31	23835
2021-06-30	24186
2021-09-30	25334
2021-12-31	26124
2022-03-31	28355
2022-06-30	24645
2022-09-30	23548
2022-12-31	27081
2023-03-31	27994
2023-06-30	31774
2023-09-30	26796