Quarter	US dollars
2004-12-31	22138
2005-03-31	30950
2005-06-30	32181
2005-09-30	43932
2005-12-31	25346
2006-03-31	32447
2006-06-30	34499
2006-09-30	39372
2006-12-31	31173
2007-03-31	34964
2007-06-30	48858
2007-09-30	45956
2007-12-31	59647
2008-03-31	67088
2008-06-30	62571
2008-09-30	61835
2008-12-31	50949
2009-03-31	51612
2009-06-30	60736
2009-09-30	64855
2009-12-31	68571
2010-03-31	80667
2010-06-30	86262
2010-09-30	94418
2010-12-31	91023
2011-03-31	108701
2011-06-30	120852
2011-09-30	111578
2011-12-31	116083
2012-03-31	113649
2012-06-30	108359
2012-09-30	103257
2012-12-31	115490
2013-03-31	126421
2013-06-30	128009
2013-09-30	122733
2013-12-31	128102
2014-03-31	130098
2014-06-30	127990
2014-09-30	130492
2014-12-31	127063
2015-03-31	117343
2015-06-30	110153
2015-09-30	104769
2015-12-31	99148
2016-03-31	102936
2016-06-30	101954
2016-09-30	108849
2016-12-31	105266
2017-03-31	115059
2017-06-30	140882
2017-09-30	133517
2017-12-31	151298
2018-03-31	152311
2018-06-30	142996
2018-09-30	141230
2018-12-31	147253
2019-03-31	149046
2019-06-30	150117
2019-09-30	141409
2019-12-31	145692
2020-03-31	152930
2020-06-30	154857
2020-09-30	150820
2020-12-31	173073
2021-03-31	184673
2021-06-30	189366
2021-09-30	187232
2021-12-31	190418
2022-03-31	185732
2022-06-30	172463
2022-09-30	164799
2022-12-31	170772
2023-03-31	183487
2023-06-30	175027
2023-09-30	178663