Quarter	US dollars
2004-12-31	291151
2005-03-31	304523
2005-06-30	294510
2005-09-30	310255
2005-12-31	309226
2006-03-31	364415
2006-06-30	390046
2006-09-30	409374
2006-12-31	430327
2007-03-31	485204
2007-06-30	556355
2007-09-30	624836
2007-12-31	645257
2008-03-31	735194
2008-06-30	725893
2008-09-30	657855
2008-12-31	661969
2009-03-31	625937
2009-06-30	624740
2009-09-30	639544
2009-12-31	545670
2010-03-31	509015
2010-06-30	493825
2010-09-30	578197
2010-12-31	540403
2011-03-31	586732
2011-06-30	584135
2011-09-30	562802
2011-12-31	526039
2012-03-31	554211
2012-06-30	531108
2012-09-30	515912
2012-12-31	547078
2013-03-31	529109
2013-06-30	519946
2013-09-30	532849
2013-12-31	528397
2014-03-31	488507
2014-06-30	490944
2014-09-30	446511
2014-12-31	411713
2015-03-31	360686
2015-06-30	352031
2015-09-30	333797
2015-12-31	317060
2016-03-31	333611
2016-06-30	316011
2016-09-30	318590
2016-12-31	300828
2017-03-31	309484
2017-06-30	318751
2017-09-30	318287
2017-12-31	332039
2018-03-31	337140
2018-06-30	307053
2018-09-30	297442
2018-12-31	296329
2019-03-31	298216
2019-06-30	314290
2019-09-30	324628
2019-12-31	314665
2020-03-31	306602
2020-06-30	304643
2020-09-30	324688
2020-12-31	338235
2021-03-31	303938
2021-06-30	312068
2021-09-30	311143
2021-12-31	300692
2022-03-31	289306
2022-06-30	248891
2022-09-30	232499
2022-12-31	235262
2023-03-31	248213
2023-06-30	267597
2023-09-30	260649