Quarter	US dollars
2004-12-31	563
2005-03-31	1382
2005-06-30	1481
2005-09-30	1643
2005-12-31	1566
2006-03-31	1932
2006-06-30	2412
2006-09-30	3030
2006-12-31	3362
2007-03-31	3389
2007-06-30	3593
2007-09-30	5175
2007-12-31	4738
2008-03-31	4679
2008-06-30	5911
2008-09-30	6255
2008-12-31	4412
2009-03-31	4205
2009-06-30	4191
2009-09-30	4081
2009-12-31	3273
2010-03-31	3795
2010-06-30	5032
2010-09-30	4922
2010-12-31	5392
2011-03-31	4878
2011-06-30	4846
2011-09-30	6576
2011-12-31	5889
2012-03-31	6341
2012-06-30	5826
2012-09-30	5424
2012-12-31	4409
2013-03-31	8961
2013-06-30	8409
2013-09-30	6866
2013-12-31	6229
2014-03-31	6004
2014-06-30	6459
2014-09-30	6674
2014-12-31	5616
2015-03-31	6739
2015-06-30	6482
2015-09-30	6201
2015-12-31	6171
2016-03-31	6326
2016-06-30	6986
2016-09-30	6881
2016-12-31	5887
2017-03-31	5298
2017-06-30	3935
2017-09-30	4254
2017-12-31	4638
2018-03-31	4162
2018-06-30	4612
2018-09-30	5207
2018-12-31	5335
2019-03-31	6806
2019-06-30	7348
2019-09-30	8980
2019-12-31	7720
2020-03-31	7793
2020-06-30	8096
2020-09-30	8224
2020-12-31	8296
2021-03-31	8465
2021-06-30	7904
2021-09-30	7230
2021-12-31	6993
2022-03-31	7335
2022-06-30	7011
2022-09-30	8134
2022-12-31	8415
2023-03-31	8565
2023-06-30	8537
2023-09-30	8705