Quarter	US dollars
2004-12-31	9350
2005-03-31	8057
2005-06-30	9351
2005-09-30	11649
2005-12-31	13374
2006-03-31	13453
2006-06-30	12143
2006-09-30	12691
2006-12-31	14681
2007-03-31	19519
2007-06-30	17987
2007-09-30	24227
2007-12-31	29039
2008-03-31	30943
2008-06-30	32279
2008-09-30	29038
2008-12-31	33096
2009-03-31	30501
2009-06-30	30443
2009-09-30	33425
2009-12-31	36461
2010-03-31	40581
2010-06-30	47848
2010-09-30	51133
2010-12-31	57078
2011-03-31	61299
2011-06-30	69622
2011-09-30	73363
2011-12-31	74536
2012-03-31	75016
2012-06-30	80304
2012-09-30	76908
2012-12-31	79306
2013-03-31	84579
2013-06-30	88207
2013-09-30	95357
2013-12-31	101842
2014-03-31	105665
2014-06-30	106124
2014-09-30	102577
2014-12-31	108062
2015-03-31	100878
2015-06-30	98149
2015-09-30	91318
2015-12-31	90082
2016-03-31	86548
2016-06-30	86088
2016-09-30	86767
2016-12-31	86589
2017-03-31	82813
2017-06-30	97950
2017-09-30	101405
2017-12-31	109982
2018-03-31	106847
2018-06-30	104165
2018-09-30	100647
2018-12-31	102876
2019-03-31	102854
2019-06-30	107217
2019-09-30	103042
2019-12-31	108815
2020-03-31	113687
2020-06-30	111559
2020-09-30	114151
2020-12-31	127237
2021-03-31	128817
2021-06-30	132298
2021-09-30	131952
2021-12-31	134881
2022-03-31	137669
2022-06-30	127724
2022-09-30	121844
2022-12-31	127906
2023-03-31	128534
2023-06-30	123971
2023-09-30	131316