Quarter	US dollars
1999-09-30	56
1999-12-31	48
2000-03-31	41
2000-06-30	58
2000-09-30	52
2000-12-31	109
2001-03-31	118
2001-06-30	87
2001-09-30	87
2001-12-31	84
2002-03-31	93
2002-06-30	88
2002-09-30	88
2002-12-31	98
2003-03-31	95
2003-06-30	120
2003-09-30	105
2003-12-31	177
2004-03-31	165
2004-06-30	170
2004-09-30	188
2004-12-31	223
2005-03-31	236
2005-06-30	224
2005-09-30	207
2005-12-31	158
2006-03-31	198
2006-06-30	259
2006-09-30	219
2006-12-31	266
2007-03-31	388
2007-06-30	433
2007-09-30	175
2007-12-31	243
2008-03-31	227
2008-06-30	217
2008-09-30	246
2008-12-31	180
2009-03-31	158
2009-06-30	175
2009-09-30	198
2009-12-31	144
2010-03-31	180
2010-06-30	2050
2010-09-30	2121
2010-12-31	2248
2011-03-31	2313
2011-06-30	2474
2011-09-30	2097
2011-12-31	1965
2012-03-31	2308
2012-06-30	1998
2012-09-30	1849
2012-12-31	2204
2013-03-31	2049
2013-06-30	1897
2013-09-30	913
2013-12-31	785
2014-03-31	554
2014-06-30	552
2014-09-30	324
2014-12-31	214
2015-03-31	117
2015-06-30	69
2015-09-30	111
2015-12-31	49
2016-03-31	168
2016-06-30	142
2016-09-30	114
2016-12-31	76
2017-03-31	100
2017-06-30	156
2017-09-30	101
2017-12-31	158
2018-03-31	177
2018-06-30	82
2018-09-30	30
2018-12-31	93
2019-03-31	98
2019-06-30	99
2019-09-30	136
2019-12-31	85
2020-03-31	151
2020-06-30	204
2020-09-30	246
2020-12-31	172
2021-03-31	197
2021-06-30	69
2021-09-30	166
2021-12-31	98
2022-03-31	199
2022-06-30	112
2022-09-30	102
2022-12-31	57
2023-03-31	119
2023-06-30	198
2023-09-30	143