Quarter	US dollars
2004-12-31	550741
2005-03-31	580421
2005-06-30	548390
2005-09-30	598481
2005-12-31	653245
2006-03-31	657934
2006-06-30	698716
2006-09-30	676843
2006-12-31	763893
2007-03-31	801864
2007-06-30	840916
2007-09-30	853273
2007-12-31	810338
2008-03-31	830169
2008-06-30	820785
2008-09-30	773904
2008-12-31	649329
2009-03-31	616829
2009-06-30	612201
2009-09-30	571638
2009-12-31	580706
2010-03-31	444886
2010-06-30	460575
2010-09-30	485829
2010-12-31	482188
2011-03-31	458399
2011-06-30	452519
2011-09-30	433751
2011-12-31	429873
2012-03-31	407277
2012-06-30	386216
2012-09-30	433677
2012-12-31	485850
2013-03-31	477822
2013-06-30	483481
2013-09-30	498613
2013-12-31	481328
2014-03-31	519774
2014-06-30	524789
2014-09-30	516393
2014-12-31	523227
2015-03-31	566814
2015-06-30	575876
2015-09-30	512234
2015-12-31	532482
2016-03-31	529683
2016-06-30	497685
2016-09-30	512440
2016-12-31	505359
2017-03-31	520094
2017-06-30	545748
2017-09-30	554768
2017-12-31	676829
2018-03-31	699048
2018-06-30	694565
2018-09-30	735602
2018-12-31	782535
2019-03-31	803014
2019-06-30	813230
2019-09-30	817945
2019-12-31	789338
2020-03-31	757529
2020-06-30	785868
2020-09-30	815519
2020-12-31	821690
2021-03-31	847796
2021-06-30	847496
2021-09-30	834196
2021-12-31	810691
2022-03-31	839612
2022-06-30	857391
2022-09-30	813453
2022-12-31	830051
2023-03-31	838103
2023-06-30	859309
2023-09-30	868646