Quarter	US dollars
2004-12-31	0
2005-03-31	2
2005-06-30	2
2005-09-30	2
2005-12-31	2
2006-03-31	2
2006-06-30	17
2006-09-30	19
2006-12-31	20
2007-03-31	20
2007-06-30	30
2007-09-30	20
2007-12-31	76
2008-03-31	74
2008-06-30	68
2008-09-30	45
2008-12-31	17
2009-03-31	0
2009-06-30	18
2009-09-30	18
2009-12-31	18
2010-03-31	18
2010-06-30	18
2010-09-30	32
2010-12-31	136
2011-03-31	140
2011-06-30	147
2011-09-30	768
2011-12-31	747
2012-03-31	1248
2012-06-30	1197
2012-09-30	1403
2012-12-31	1563
2013-03-31	1353
2013-06-30	1471
2013-09-30	1517
2013-12-31	1221
2014-03-31	1184
2014-06-30	1212
2014-09-30	1185
2014-12-31	1135
2015-03-31	1125
2015-06-30	1048
2015-09-30	1010
2015-12-31	975
2016-03-31	843
2016-06-30	822
2016-09-30	761
2016-12-31	711
2017-03-31	553
2017-06-30	455
2017-09-30	384
2017-12-31	309
2018-03-31	286
2018-06-30	244
2018-09-30	239
2018-12-31	220
2019-03-31	220
2019-06-30	160
2019-09-30	161
2019-12-31	152
2020-03-31	135
2020-06-30	136
2020-09-30	110
2020-12-31	46
2021-03-31	44
2021-06-30	43
2021-09-30	50
2021-12-31	43
2022-03-31	63
2022-06-30	63
2022-09-30	63
2022-12-31	58
2023-03-31	59
2023-06-30	56
2023-09-30	57