Quarter	US dollars
2004-12-31	48539
2005-03-31	51776
2005-06-30	51542
2005-09-30	51697
2005-12-31	52803
2006-03-31	56970
2006-06-30	62319
2006-09-30	64391
2006-12-31	69387
2007-03-31	77769
2007-06-30	88456
2007-09-30	108671
2007-12-31	112767
2008-03-31	118185
2008-06-30	130580
2008-09-30	114074
2008-12-31	58783
2009-03-31	55061
2009-06-30	59527
2009-09-30	61064
2009-12-31	58853
2010-03-31	59127
2010-06-30	65730
2010-09-30	64865
2010-12-31	70350
2011-03-31	71556
2011-06-30	69087
2011-09-30	57949
2011-12-31	58486
2012-03-31	54895
2012-06-30	51518
2012-09-30	55236
2012-12-31	52166
2013-03-31	51099
2013-06-30	45314
2013-09-30	45541
2013-12-31	35672
2014-03-31	35849
2014-06-30	37112
2014-09-30	32721
2014-12-31	30732
2015-03-31	28433
2015-06-30	28602
2015-09-30	24231
2015-12-31	26802
2016-03-31	29138
2016-06-30	26134
2016-09-30	25568
2016-12-31	26273
2017-03-31	28165
2017-06-30	29334
2017-09-30	32005
2017-12-31	32320
2018-03-31	33187
2018-06-30	32985
2018-09-30	33669
2018-12-31	34414
2019-03-31	37126
2019-06-30	37656
2019-09-30	36657
2019-12-31	38210
2020-03-31	35739
2020-06-30	41196
2020-09-30	41534
2020-12-31	44777
2021-03-31	45830
2021-06-30	43418
2021-09-30	41970
2021-12-31	43175
2022-03-31	47736
2022-06-30	45873
2022-09-30	44410
2022-12-31	46963
2023-03-31	48363
2023-06-30	47833
2023-09-30	47559