Quarter	US dollars
2004-12-31	100221
2005-03-31	128910
2005-06-30	115666
2005-09-30	144651
2005-12-31	142097
2006-03-31	135270
2006-06-30	137867
2006-09-30	144163
2006-12-31	142041
2007-03-31	160258
2007-06-30	144437
2007-09-30	178853
2007-12-31	135821
2008-03-31	183768
2008-06-30	162846
2008-09-30	201547
2008-12-31	175396
2009-03-31	164265
2009-06-30	161775
2009-09-30	122361
2009-12-31	128950
2010-03-31	137826
2010-06-30	133491
2010-09-30	144886
2010-12-31	155299
2011-03-31	160656
2011-06-30	152204
2011-09-30	134071
2011-12-31	123147
2012-03-31	147364
2012-06-30	106895
2012-09-30	107118
2012-12-31	90851
2013-03-31	89785
2013-06-30	124859
2013-09-30	110126
2013-12-31	80144
2014-03-31	122361
2014-06-30	126814
2014-09-30	115955
2014-12-31	91864
2015-03-31	99181
2015-06-30	81888
2015-09-30	85514
2015-12-31	72336
2016-03-31	66812
2016-06-30	90499
2016-09-30	62436
2016-12-31	58758
2017-03-31	61776
2017-06-30	50783
2017-09-30	50848
2017-12-31	62786
2018-03-31	51765
2018-06-30	54754
2018-09-30	48419
2018-12-31	45201
2019-03-31	40185
2019-06-30	54463
2019-09-30	45335
2019-12-31	40935
2020-03-31	62986
2020-06-30	43769
2020-09-30	46294
2020-12-31	46693
2021-03-31	57921
2021-06-30	57392
2021-09-30	58352
2021-12-31	49695
2022-03-31	54813
2022-06-30	57008
2022-09-30	51400
2022-12-31	44327
2023-03-31	54090
2023-06-30	49197
2023-09-30	46898