Quarter	US dollars
2004-12-31	10
2005-03-31	3800
2005-06-30	0
2005-09-30	3614
2005-12-31	3608
2006-03-31	9
2006-06-30	3408
2006-09-30	2
2006-12-31	3208
2007-03-31	3097
2007-06-30	3491
2007-09-30	3765
2007-12-31	3914
2008-03-31	3943
2008-06-30	4110
2008-09-30	3149
2008-12-31	7
2009-03-31	2840
2009-06-30	2874
2009-09-30	0
2009-12-31	2989
2010-03-31	2827
2010-06-30	0
2010-09-30	0
2010-12-31	3505
2011-03-31	3174
2011-06-30	0
2011-09-30	0
2011-12-31	0
2012-03-31	0
2012-06-30	0
2012-09-30	3417
2012-12-31	3368
2013-03-31	3539
2013-06-30	2995
2013-09-30	3210
2013-12-31	3370
2014-03-31	3088
2014-06-30	3448
2014-09-30	3024
2014-12-31	3179
2015-03-31	0
2015-06-30	0
2015-09-30	0
2015-12-31	0
2016-03-31	9
2016-06-30	3
2016-09-30	0
2016-12-31	0
2017-03-31	0
2017-06-30	0
2017-09-30	1
2017-12-31	0
2018-03-31	34
2018-06-30	50
2018-09-30	46
2018-12-31	0
2019-03-31	1
2019-06-30	43
2019-09-30	42