Quarter	US dollars
2004-12-31	827
2005-03-31	777
2005-06-30	787
2005-09-30	1358
2005-12-31	5282
2006-03-31	3287
2006-06-30	1787
2006-09-30	1730
2006-12-31	1566
2007-03-31	1649
2007-06-30	1693
2007-09-30	2239
2007-12-31	1746
2008-03-31	1882
2008-06-30	2406
2008-09-30	2137
2008-12-31	1855
2009-03-31	1637
2009-06-30	2442
2009-09-30	1561
2009-12-31	1694
2010-03-31	1702
2010-06-30	1489
2010-09-30	1593
2010-12-31	1752
2011-03-31	1829
2011-06-30	1522
2011-09-30	2078
2011-12-31	2248
2012-03-31	1996
2012-06-30	1468
2012-09-30	1649
2012-12-31	3020
2013-03-31	2878
2013-06-30	2883
2013-09-30	3023
2013-12-31	2982
2014-03-31	3300
2014-06-30	3385
2014-09-30	3121
2014-12-31	3153
2015-03-31	2607
2015-06-30	2449
2015-09-30	2480
2015-12-31	2285
2016-03-31	2364
2016-06-30	2359
2016-09-30	2448
2016-12-31	2221
2017-03-31	2431
2017-06-30	2788
2017-09-30	3039
2017-12-31	3238
2018-03-31	3731
2018-06-30	4496
2018-09-30	3503
2018-12-31	3693
2019-03-31	3338
2019-06-30	3546
2019-09-30	3711
2019-12-31	3379
2020-03-31	3055
2020-06-30	3960
2020-09-30	3730
2020-12-31	3597
2021-03-31	3735
2021-06-30	3093
2021-09-30	2771
2021-12-31	3435
2022-03-31	3105
2022-06-30	2653
2022-09-30	2545
2022-12-31	3213
2023-03-31	3262
2023-06-30	3359
2023-09-30	3615