Quarter	US dollars
2004-12-31	41226
2005-03-31	42145
2005-06-30	42258
2005-09-30	96504
2005-12-31	98190
2006-03-31	113880
2006-06-30	106925
2006-09-30	109871
2006-12-31	120085
2007-03-31	133812
2007-06-30	141680
2007-09-30	170249
2007-12-31	183023
2008-03-31	191217
2008-06-30	197000
2008-09-30	197790
2008-12-31	173212
2009-03-31	176301
2009-06-30	189588
2009-09-30	192175
2009-12-31	195233
2010-03-31	207839
2010-06-30	208232
2010-09-30	222966
2010-12-31	235933
2011-03-31	228580
2011-06-30	231756
2011-09-30	223605
2011-12-31	213946
2012-03-31	220972
2012-06-30	222680
2012-09-30	223526
2012-12-31	219468
2013-03-31	211839
2013-06-30	202404
2013-09-30	209419
2013-12-31	199824
2014-03-31	209021
2014-06-30	207819
2014-09-30	207311
2014-12-31	205517
2015-03-31	205551
2015-06-30	206671
2015-09-30	204485
2015-12-31	198382
2016-03-31	192034
2016-06-30	191492
2016-09-30	195813
2016-12-31	187932
2017-03-31	193832
2017-06-30	143720
2017-09-30	141038
2017-12-31	144437
2018-03-31	148674
2018-06-30	138650
2018-09-30	138649
2018-12-31	139361
2019-03-31	145576
2019-06-30	147534
2019-09-30	146716
2019-12-31	149413
2020-03-31	150553
2020-06-30	149394
2020-09-30	143727
2020-12-31	154366
2021-03-31	149837
2021-06-30	153193
2021-09-30	150545
2021-12-31	160748
2022-03-31	159101
2022-06-30	157011
2022-09-30	154838
2022-12-31	152442
2023-03-31	156528
2023-06-30	155116
2023-09-30	144764