Quarter	US dollars
2004-12-31	50194
2005-03-31	52559
2005-06-30	52382
2005-09-30	52417
2005-12-31	52767
2006-03-31	56907
2006-06-30	62356
2006-09-30	66379
2006-12-31	69931
2007-03-31	78854
2007-06-30	91203
2007-09-30	109093
2007-12-31	112998
2008-03-31	123356
2008-06-30	136664
2008-09-30	116651
2008-12-31	62620
2009-03-31	59124
2009-06-30	65487
2009-09-30	67383
2009-12-31	66399
2010-03-31	66268
2010-06-30	72995
2010-09-30	74406
2010-12-31	79671
2011-03-31	80831
2011-06-30	77417
2011-09-30	64439
2011-12-31	64808
2012-03-31	59042
2012-06-30	57980
2012-09-30	61999
2012-12-31	59956
2013-03-31	57960
2013-06-30	51051
2013-09-30	51008
2013-12-31	39775
2014-03-31	37943
2014-06-30	38901
2014-09-30	34849
2014-12-31	32524
2015-03-31	31222
2015-06-30	31013
2015-09-30	26203
2015-12-31	28324
2016-03-31	30822
2016-06-30	30078
2016-09-30	29668
2016-12-31	28627
2017-03-31	30381
2017-06-30	31242
2017-09-30	34002
2017-12-31	34174
2018-03-31	35760
2018-06-30	35892
2018-09-30	36247
2018-12-31	37564
2019-03-31	40444
2019-06-30	40245
2019-09-30	39494
2019-12-31	40724
2020-03-31	37564
2020-06-30	43542
2020-09-30	43550
2020-12-31	46454
2021-03-31	46566
2021-06-30	44201
2021-09-30	43242
2021-12-31	47175
2022-03-31	51329
2022-06-30	49484
2022-09-30	47178
2022-12-31	49499
2023-03-31	51185
2023-06-30	49259
2023-09-30	48531