Quarter	US dollars
2004-12-31	12921
2005-03-31	13921
2005-06-30	8410
2005-09-30	15427
2005-12-31	15223
2006-03-31	17388
2006-06-30	17149
2006-09-30	17895
2006-12-31	19895
2007-03-31	22561
2007-06-30	24544
2007-09-30	26941
2007-12-31	31086
2008-03-31	34088
2008-06-30	34656
2008-09-30	35883
2008-12-31	31525
2009-03-31	31478
2009-06-30	32836
2009-09-30	34954
2009-12-31	35590
2010-03-31	39307
2010-06-30	44428
2010-09-30	45351
2010-12-31	45872
2011-03-31	45855
2011-06-30	46538
2011-09-30	44266
2011-12-31	40106
2012-03-31	45110
2012-06-30	43041
2012-09-30	43160
2012-12-31	41291
2013-03-31	43982
2013-06-30	39929
2013-09-30	41215
2013-12-31	41755
2014-03-31	43783
2014-06-30	42972
2014-09-30	43719
2014-12-31	41712
2015-03-31	45551
2015-06-30	42427
2015-09-30	41439
2015-12-31	40211
2016-03-31	42530
2016-06-30	39707
2016-09-30	44750
2016-12-31	38052
2017-03-31	40862
2017-06-30	45870
2017-09-30	45169
2017-12-31	44444
2018-03-31	47806
2018-06-30	45866
2018-09-30	43713
2018-12-31	48129
2019-03-31	51521
2019-06-30	50083
2019-09-30	48710
2019-12-31	47308
2020-03-31	51192
2020-06-30	47816
2020-09-30	50189
2020-12-31	51850
2021-03-31	57544
2021-06-30	57744
2021-09-30	61194
2021-12-31	62738
2022-03-31	61294
2022-06-30	65330
2022-09-30	64581
2022-12-31	65423
2023-03-31	69547
2023-06-30	74195
2023-09-30	75042