Quarter	US dollars
2004-12-31	1451
2005-03-31	1805
2005-06-30	1423
2005-09-30	1555
2005-12-31	2069
2006-03-31	1604
2006-06-30	1461
2006-09-30	1250
2006-12-31	1566
2007-03-31	1369
2007-06-30	1659
2007-09-30	1948
2007-12-31	2960
2008-03-31	3232
2008-06-30	2820
2008-09-30	3074
2008-12-31	2074
2009-03-31	1644
2009-06-30	1312
2009-09-30	1075
2009-12-31	1347
2010-03-31	1853
2010-06-30	1791
2010-09-30	1404
2010-12-31	1324
2011-03-31	1451
2011-06-30	1978
2011-09-30	2239
2011-12-31	2225
2012-03-31	2445
2012-06-30	1783
2012-09-30	1502
2012-12-31	1832
2013-03-31	1644
2013-06-30	1254
2013-09-30	1049
2013-12-31	1233
2014-03-31	1432
2014-06-30	783
2014-09-30	1278
2014-12-31	1751
2015-03-31	2036
2015-06-30	2279
2015-09-30	2984
2015-12-31	1781
2016-03-31	1550
2016-06-30	1638
2016-09-30	1190
2016-12-31	1480
2017-03-31	1490
2017-06-30	1257
2017-09-30	1173
2017-12-31	1469
2018-03-31	1239
2018-06-30	648
2018-09-30	601
2018-12-31	633
2019-03-31	1243
2019-06-30	1609
2019-09-30	1440
2019-12-31	1601
2020-03-31	2304
2020-06-30	2310
2020-09-30	2154
2020-12-31	1881
2021-03-31	2072
2021-06-30	2031
2021-09-30	2346
2021-12-31	2379
2022-03-31	2378
2022-06-30	2577
2022-09-30	2570
2022-12-31	3224
2023-03-31	2756
2023-06-30	3096
2023-09-30	4668