Quarter	US dollars
2004-12-31	1628
2005-03-31	1809
2005-06-30	1825
2005-09-30	2002
2005-12-31	2111
2006-03-31	2534
2006-06-30	2928
2006-09-30	3041
2006-12-31	3793
2007-03-31	5933
2007-06-30	5622
2007-09-30	8573
2007-12-31	7814
2008-03-31	9673
2008-06-30	9809
2008-09-30	10391
2008-12-31	12054
2009-03-31	12918
2009-06-30	12277
2009-09-30	12991
2009-12-31	12962
2010-03-31	15096
2010-06-30	16401
2010-09-30	18052
2010-12-31	19993
2011-03-31	17934
2011-06-30	16910
2011-09-30	17065
2011-12-31	16868
2012-03-31	17709
2012-06-30	16194
2012-09-30	15774
2012-12-31	12854
2013-03-31	14760
2013-06-30	14401
2013-09-30	14199
2013-12-31	10479
2014-03-31	11541
2014-06-30	11819
2014-09-30	13561
2014-12-31	13612
2015-03-31	16053
2015-06-30	14958
2015-09-30	15547
2015-12-31	15124
2016-03-31	14651
2016-06-30	14327
2016-09-30	13978
2016-12-31	14132
2017-03-31	14162
2017-06-30	15962
2017-09-30	14220
2017-12-31	14184
2018-03-31	15165
2018-06-30	14651
2018-09-30	15555
2018-12-31	15324
2019-03-31	15828
2019-06-30	16004
2019-09-30	16520
2019-12-31	18457
2020-03-31	21551
2020-06-30	22647
2020-09-30	22506
2020-12-31	23760
2021-03-31	23842
2021-06-30	23186
2021-09-30	23482
2021-12-31	23470
2022-03-31	23661
2022-06-30	24490
2022-09-30	23930
2022-12-31	25601
2023-03-31	26436
2023-06-30	26997
2023-09-30	26068