Quarter	US dollars
2004-12-31	7814
2005-03-31	8581
2005-06-30	9387
2005-09-30	11575
2005-12-31	12289
2006-03-31	12636
2006-06-30	13068
2006-09-30	13541
2006-12-31	15850
2007-03-31	18091
2007-06-30	18900
2007-09-30	23638
2007-12-31	26537
2008-03-31	25078
2008-06-30	26230
2008-09-30	22918
2008-12-31	26117
2009-03-31	23338
2009-06-30	23292
2009-09-30	24068
2009-12-31	26938
2010-03-31	30072
2010-06-30	34833
2010-09-30	38488
2010-12-31	45730
2011-03-31	49461
2011-06-30	54762
2011-09-30	56080
2011-12-31	58401
2012-03-31	58727
2012-06-30	62128
2012-09-30	63617
2012-12-31	66040
2013-03-31	67241
2013-06-30	69943
2013-09-30	77938
2013-12-31	83655
2014-03-31	90684
2014-06-30	91007
2014-09-30	91736
2014-12-31	96528
2015-03-31	94466
2015-06-30	94377
2015-09-30	86536
2015-12-31	80109
2016-03-31	78068
2016-06-30	76980
2016-09-30	75428
2016-12-31	73633
2017-03-31	75926
2017-06-30	82068
2017-09-30	85830
2017-12-31	89092
2018-03-31	93718
2018-06-30	89717
2018-09-30	87769
2018-12-31	85329
2019-03-31	93935
2019-06-30	97337
2019-09-30	95715
2019-12-31	101949
2020-03-31	97194
2020-06-30	97906
2020-09-30	99201
2020-12-31	107343
2021-03-31	111345
2021-06-30	121965
2021-09-30	118396
2021-12-31	122598
2022-03-31	121431
2022-06-30	122166
2022-09-30	115936
2022-12-31	120605
2023-03-31	119159
2023-06-30	115366
2023-09-30	112705