Quarter	US dollars
2004-12-31	29
2005-03-31	28
2005-06-30	34
2005-09-30	28
2005-12-31	199
2006-03-31	239
2006-06-30	148
2006-09-30	198
2006-12-31	252
2007-03-31	292
2007-06-30	227
2007-09-30	257
2007-12-31	213
2008-03-31	211
2008-06-30	213
2008-09-30	266
2008-12-31	203
2009-03-31	148
2009-06-30	156
2009-09-30	154
2009-12-31	160
2010-03-31	159
2010-06-30	162
2010-09-30	150
2010-12-31	189
2011-03-31	210
2011-06-30	202
2011-09-30	193
2011-12-31	216
2012-03-31	193
2012-06-30	248
2012-09-30	199
2012-12-31	199
2013-03-31	255
2013-06-30	698
2013-09-30	300
2013-12-31	241
2014-03-31	257
2014-06-30	513
2014-09-30	566
2014-12-31	421
2015-03-31	368
2015-06-30	371
2015-09-30	398
2015-12-31	396
2016-03-31	423
2016-06-30	406
2016-09-30	379
2016-12-31	396
2017-03-31	431
2017-06-30	170
2017-09-30	150
2017-12-31	147
2018-03-31	122
2018-06-30	116
2018-09-30	126
2018-12-31	144
2019-03-31	147
2019-06-30	146
2019-09-30	159
2019-12-31	168
2020-03-31	161
2020-06-30	173
2020-09-30	180
2020-12-31	165
2021-03-31	161
2021-06-30	214
2021-09-30	189
2021-12-31	185
2022-03-31	229
2022-06-30	205
2022-09-30	179
2022-12-31	157
2023-03-31	189
2023-06-30	155
2023-09-30	142