Quarter	US dollars
2004-12-31	50
2005-03-31	180
2005-06-30	138
2005-09-30	142
2005-12-31	144
2006-03-31	114
2006-06-30	172
2006-09-30	198
2006-12-31	245
2007-03-31	267
2007-06-30	181
2007-09-30	257
2007-12-31	267
2008-03-31	254
2008-06-30	209
2008-09-30	253
2008-12-31	262
2009-03-31	246
2009-06-30	334
2009-09-30	321
2009-12-31	260
2010-03-31	262
2010-06-30	296
2010-09-30	257
2010-12-31	52
2011-03-31	48
2011-06-30	74
2011-09-30	58
2011-12-31	63
2012-03-31	75
2012-06-30	39
2012-09-30	84
2012-12-31	178
2013-03-31	231
2013-06-30	117
2013-09-30	105
2013-12-31	117
2014-03-31	207
2014-06-30	186
2014-09-30	139
2014-12-31	89
2015-03-31	194
2015-06-30	178
2015-09-30	120
2015-12-31	179
2016-03-31	121
2016-06-30	158
2016-09-30	164
2016-12-31	146
2017-03-31	181
2017-06-30	347
2017-09-30	309
2017-12-31	449
2018-03-31	202
2018-06-30	242
2018-09-30	301
2018-12-31	298
2019-03-31	283
2019-06-30	360
2019-09-30	306
2019-12-31	314
2020-03-31	300
2020-06-30	271
2020-09-30	293
2020-12-31	262
2021-03-31	248
2021-06-30	243
2021-09-30	202
2021-12-31	179
2022-03-31	136
2022-06-30	89
2022-09-30	113
2022-12-31	106
2023-03-31	76
2023-06-30	70
2023-09-30	69