Quarter	US dollars
2004-12-31	60
2005-03-31	49
2005-06-30	54
2005-09-30	65
2005-12-31	67
2006-03-31	82
2006-06-30	63
2006-09-30	62
2006-12-31	55
2007-03-31	57
2007-06-30	58
2007-09-30	59
2007-12-31	60
2008-03-31	103
2008-06-30	155
2008-09-30	173
2008-12-31	210
2009-03-31	211
2009-06-30	237
2009-09-30	333
2009-12-31	260
2010-03-31	246
2010-06-30	192
2010-09-30	173
2010-12-31	169
2011-03-31	168
2011-06-30	162
2011-09-30	162
2011-12-31	158
2012-03-31	118
2012-06-30	115
2012-09-30	111
2012-12-31	97
2013-03-31	97
2013-06-30	109
2013-09-30	76
2013-12-31	96
2014-03-31	72
2014-06-30	79
2014-09-30	79
2014-12-31	81
2015-03-31	104
2015-06-30	91
2015-09-30	58
2015-12-31	65
2016-03-31	119
2016-06-30	79
2016-09-30	74
2016-12-31	52
2017-03-31	56
2017-06-30	47
2017-09-30	52
2017-12-31	55
2018-03-31	86
2018-06-30	75
2018-09-30	81
2018-12-31	74
2019-03-31	77
2019-06-30	69
2019-09-30	69
2019-12-31	67
2020-03-31	67
2020-06-30	67
2020-09-30	68
2020-12-31	67
2021-03-31	68
2021-06-30	68
2021-09-30	67
2021-12-31	67
2022-03-31	67
2022-06-30	67
2022-09-30	67
2022-12-31	67
2023-03-31	33
2023-06-30	33
2023-09-30	35