Quarter	US dollars
2004-12-31	55921
2005-03-31	58644
2005-06-30	87910
2005-09-30	99115
2005-12-31	102444
2006-03-31	107317
2006-06-30	109200
2006-09-30	112090
2006-12-31	122761
2007-03-31	129873
2007-06-30	136387
2007-09-30	156725
2007-12-31	163503
2008-03-31	169703
2008-06-30	170514
2008-09-30	170552
2008-12-31	166552
2009-03-31	157213
2009-06-30	157148
2009-09-30	168801
2009-12-31	175729
2010-03-31	187137
2010-06-30	214227
2010-09-30	232629
2010-12-31	241652
2011-03-31	247367
2011-06-30	263103
2011-09-30	252222
2011-12-31	246119
2012-03-31	252767
2012-06-30	254195
2012-09-30	258675
2012-12-31	262622
2013-03-31	261241
2013-06-30	257031
2013-09-30	267029
2013-12-31	268537
2014-03-31	272122
2014-06-30	274533
2014-09-30	274497
2014-12-31	272282
2015-03-31	267400
2015-06-30	264324
2015-09-30	247378
2015-12-31	241296
2016-03-31	241553
2016-06-30	239533
2016-09-30	235866
2016-12-31	221608
2017-03-31	236178
2017-06-30	251523
2017-09-30	254681
2017-12-31	260523
2018-03-31	264237
2018-06-30	254036
2018-09-30	252308
2018-12-31	257465
2019-03-31	269933
2019-06-30	274417
2019-09-30	277603
2019-12-31	284207
2020-03-31	277786
2020-06-30	276509
2020-09-30	278913
2020-12-31	300581
2021-03-31	303389
2021-06-30	318941
2021-09-30	315694
2021-12-31	323708
2022-03-31	318590
2022-06-30	314011
2022-09-30	298989
2022-12-31	303761
2023-03-31	300459
2023-06-30	297185
2023-09-30	290533