Quarter	US dollars
2004-12-31	29
2005-03-31	34
2005-06-30	23
2005-09-30	37
2005-12-31	31
2006-03-31	35
2006-06-30	41
2006-09-30	32
2006-12-31	29
2007-03-31	37
2007-06-30	38
2007-09-30	45
2007-12-31	42
2008-03-31	10
2008-06-30	42
2008-09-30	52
2008-12-31	39
2009-03-31	40
2009-06-30	46
2009-09-30	35
2009-12-31	27
2010-03-31	30
2010-06-30	37
2010-09-30	38
2010-12-31	41
2011-03-31	27
2011-06-30	27
2011-09-30	28
2011-12-31	31
2012-03-31	32
2012-06-30	42
2012-09-30	40
2012-12-31	29
2013-03-31	27
2013-06-30	30
2013-09-30	34
2013-12-31	41
2014-03-31	35
2014-06-30	38
2014-09-30	45
2014-12-31	31
2015-03-31	34
2015-06-30	27
2015-09-30	29
2015-12-31	21
2016-03-31	35
2016-06-30	27
2016-09-30	21
2016-12-31	25
2017-03-31	25
2017-06-30	22
2017-09-30	12
2017-12-31	15
2018-03-31	22
2018-06-30	16
2018-09-30	31
2018-12-31	19
2019-03-31	46
2019-06-30	50
2019-09-30	46
2019-12-31	48
2020-03-31	16
2020-06-30	17
2020-09-30	14
2020-12-31	19
2021-03-31	21
2021-06-30	39
2021-09-30	24
2021-12-31	28
2022-03-31	25
2022-06-30	32
2022-09-30	21
2022-12-31	22
2023-03-31	25
2023-06-30	19
2023-09-30	18