Quarter	US dollars
2004-12-31	1104
2005-03-31	1091
2005-06-30	1174
2005-09-30	1037
2005-12-31	1085
2006-03-31	1070
2006-06-30	1082
2006-09-30	1091
2006-12-31	1180
2007-03-31	1149
2007-06-30	1316
2007-09-30	1508
2007-12-31	1698
2008-03-31	3118
2008-06-30	2937
2008-09-30	2882
2008-12-31	2626
2009-03-31	2813
2009-06-30	2874
2009-09-30	2423
2009-12-31	2464
2010-03-31	2302
2010-06-30	2327
2010-09-30	2251
2010-12-31	2499
2011-03-31	2465
2011-06-30	2606
2011-09-30	2664
2011-12-31	2866
2012-03-31	2715
2012-06-30	2687
2012-09-30	2800
2012-12-31	2231
2013-03-31	1939
2013-06-30	2929
2013-09-30	3151
2013-12-31	3593
2014-03-31	3423
2014-06-30	3248
2014-09-30	3417
2014-12-31	3264
2015-03-31	3326
2015-06-30	2976
2015-09-30	2946
2015-12-31	2925
2016-03-31	2969
2016-06-30	2750
2016-09-30	2736
2016-12-31	2975
2017-03-31	2980
2017-06-30	1415
2017-09-30	1358
2017-12-31	1277
2018-03-31	1447
2018-06-30	1464
2018-09-30	1228
2018-12-31	1417
2019-03-31	1713
2019-06-30	1660
2019-09-30	1673
2019-12-31	1794
2020-03-31	1684
2020-06-30	1495
2020-09-30	1438
2020-12-31	1447
2021-03-31	1513
2021-06-30	1258
2021-09-30	1365
2021-12-31	1350
2022-03-31	1242
2022-06-30	1261
2022-09-30	1579
2022-12-31	1143
2023-03-31	1635
2023-06-30	1225
2023-09-30	1322