Quarter	US dollars
2004-12-31	1290
2005-03-31	1163
2005-06-30	1208
2005-09-30	1091
2005-12-31	1162
2006-03-31	1153
2006-06-30	1539
2006-09-30	1556
2006-12-31	1581
2007-03-31	1630
2007-06-30	1824
2007-09-30	2425
2007-12-31	2586
2008-03-31	2317
2008-06-30	2243
2008-09-30	2196
2008-12-31	2156
2009-03-31	2198
2009-06-30	2661
2009-09-30	2564
2009-12-31	2429
2010-03-31	2434
2010-06-30	2895
2010-09-30	2847
2010-12-31	3488
2011-03-31	3509
2011-06-30	3574
2011-09-30	3022
2011-12-31	2972
2012-03-31	3709
2012-06-30	3241
2012-09-30	3278
2012-12-31	2669
2013-03-31	2471
2013-06-30	2352
2013-09-30	2385
2013-12-31	2831
2014-03-31	2806
2014-06-30	2838
2014-09-30	1624
2014-12-31	1787
2015-03-31	1534
2015-06-30	1661
2015-09-30	1524
2015-12-31	1464
2016-03-31	1399
2016-06-30	1201
2016-09-30	1183
2016-12-31	1212
2017-03-31	1184
2017-06-30	1282
2017-09-30	1287
2017-12-31	1189
2018-03-31	1242
2018-06-30	1195
2018-09-30	1159
2018-12-31	1158
2019-03-31	1113
2019-06-30	1163
2019-09-30	1092
2019-12-31	1128
2020-03-31	1027
2020-06-30	937
2020-09-30	969
2020-12-31	1048
2021-03-31	1156
2021-06-30	1173
2021-09-30	1127
2021-12-31	1136
2022-03-31	1169
2022-06-30	1293
2022-09-30	1278
2022-12-31	1306
2023-03-31	1353
2023-06-30	1397
2023-09-30	1273