Quarter	US dollars
2004-12-31	2206
2005-03-31	2316
2005-06-30	2400
2005-09-30	2616
2005-12-31	2509
2006-03-31	2820
2006-06-30	3244
2006-09-30	3395
2006-12-31	7785
2007-03-31	6478
2007-06-30	7083
2007-09-30	6917
2007-12-31	6996
2008-03-31	7066
2008-06-30	7566
2008-09-30	7677
2008-12-31	7113
2009-03-31	6652
2009-06-30	6704
2009-09-30	6787
2009-12-31	6719
2010-03-31	6925
2010-06-30	6796
2010-09-30	7222
2010-12-31	7215
2011-03-31	7379
2011-06-30	7734
2011-09-30	8394
2011-12-31	8109
2012-03-31	8070
2012-06-30	8111
2012-09-30	8045
2012-12-31	8433
2013-03-31	8199
2013-06-30	8107
2013-09-30	8286
2013-12-31	2530
2014-03-31	2641
2014-06-30	2724
2014-09-30	2761
2014-12-31	2905
2015-03-31	2701
2015-06-30	2290
2015-09-30	2124
2015-12-31	1904
2016-03-31	1865
2016-06-30	1692
2016-09-30	1620
2016-12-31	1296
2017-03-31	1192
2017-06-30	1007
2017-09-30	1249
2017-12-31	1439
2018-03-31	1466
2018-06-30	1304
2018-09-30	1412
2018-12-31	1391
2019-03-31	1020
2019-06-30	1250
2019-09-30	1305
2019-12-31	1259
2020-03-31	1363
2020-06-30	1296
2020-09-30	1343
2020-12-31	1166
2021-03-31	1254
2021-06-30	1256
2021-09-30	1199
2021-12-31	1414
2022-03-31	1158
2022-06-30	1361
2022-09-30	1496
2022-12-31	1565
2023-03-31	1345
2023-06-30	1045
2023-09-30	925