Quarter	US dollars
2004-12-31	1004
2005-03-31	934
2005-06-30	927
2005-09-30	1457
2005-12-31	5395
2006-03-31	3537
2006-06-30	2044
2006-09-30	1786
2006-12-31	1685
2007-03-31	1757
2007-06-30	1647
2007-09-30	1789
2007-12-31	1621
2008-03-31	1866
2008-06-30	2521
2008-09-30	1866
2008-12-31	1689
2009-03-31	1455
2009-06-30	2175
2009-09-30	1454
2009-12-31	1804
2010-03-31	1706
2010-06-30	1555
2010-09-30	1716
2010-12-31	1954
2011-03-31	1842
2011-06-30	1439
2011-09-30	2050
2011-12-31	2253
2012-03-31	2133
2012-06-30	1595
2012-09-30	1734
2012-12-31	3012
2013-03-31	2840
2013-06-30	2859
2013-09-30	3025
2013-12-31	2983
2014-03-31	3268
2014-06-30	3337
2014-09-30	3066
2014-12-31	3148
2015-03-31	2609
2015-06-30	2449
2015-09-30	2475
2015-12-31	2281
2016-03-31	2359
2016-06-30	2365
2016-09-30	2457
2016-12-31	2229
2017-03-31	2441
2017-06-30	2789
2017-09-30	3040
2017-12-31	3192
2018-03-31	3682
2018-06-30	4480
2018-09-30	3393
2018-12-31	3607
2019-03-31	3315
2019-06-30	3430
2019-09-30	3605
2019-12-31	3353
2020-03-31	3030
2020-06-30	3681
2020-09-30	3465
2020-12-31	3560
2021-03-31	3751
2021-06-30	3053
2021-09-30	3096
2021-12-31	3720
2022-03-31	3244
2022-06-30	2998
2022-09-30	2911
2022-12-31	3452
2023-03-31	3444
2023-06-30	3652
2023-09-30	3907