Quarter	US dollars
2004-12-31	5610
2005-03-31	7622
2005-06-30	7740
2005-09-30	8702
2005-12-31	8732
2006-03-31	10201
2006-06-30	11304
2006-09-30	13582
2006-12-31	14450
2007-03-31	17183
2007-06-30	18802
2007-09-30	22069
2007-12-31	22507
2008-03-31	22014
2008-06-30	24162
2008-09-30	24149
2008-12-31	19625
2009-03-31	17677
2009-06-30	18932
2009-09-30	17447
2009-12-31	16426
2010-03-31	15731
2010-06-30	19044
2010-09-30	21436
2010-12-31	29286
2011-03-31	27546
2011-06-30	27675
2011-09-30	30868
2011-12-31	30305
2012-03-31	35395
2012-06-30	35773
2012-09-30	35043
2012-12-31	44423
2013-03-31	81854
2013-06-30	85343
2013-09-30	79720
2013-12-31	71388
2014-03-31	69641
2014-06-30	63201
2014-09-30	61223
2014-12-31	52018
2015-03-31	54422
2015-06-30	58861
2015-09-30	61636
2015-12-31	59276
2016-03-31	63268
2016-06-30	64970
2016-09-30	62557
2016-12-31	57836
2017-03-31	58777
2017-06-30	51685
2017-09-30	53605
2017-12-31	53774
2018-03-31	56039
2018-06-30	58326
2018-09-30	57139
2018-12-31	61058
2019-03-31	64513
2019-06-30	69267
2019-09-30	77158
2019-12-31	76613
2020-03-31	84457
2020-06-30	82938
2020-09-30	84191
2020-12-31	75977
2021-03-31	77902
2021-06-30	71154
2021-09-30	70133
2021-12-31	67146
2022-03-31	72007
2022-06-30	69635
2022-09-30	70935
2022-12-31	71390
2023-03-31	71339
2023-06-30	65657
2023-09-30	66766