Quarter	US dollars
2004-12-31	1814
2005-03-31	433
2005-06-30	414
2005-09-30	1160
2005-12-31	1191
2006-03-31	1315
2006-06-30	1176
2006-09-30	516
2006-12-31	454
2007-03-31	467
2007-06-30	504
2007-09-30	473
2007-12-31	595
2008-03-31	2707
2008-06-30	2657
2008-09-30	2470
2008-12-31	2149
2009-03-31	2274
2009-06-30	2007
2009-09-30	2210
2009-12-31	2107
2010-03-31	2079
2010-06-30	2015
2010-09-30	1963
2010-12-31	1863
2011-03-31	1993
2011-06-30	1793
2011-09-30	1650
2011-12-31	2168
2012-03-31	1998
2012-06-30	2271
2012-09-30	2187
2012-12-31	2137
2013-03-31	2303
2013-06-30	2336
2013-09-30	2233
2013-12-31	2631
2014-03-31	2321
2014-06-30	2763
2014-09-30	2908
2014-12-31	3025
2015-03-31	2849
2015-06-30	2625
2015-09-30	2492
2015-12-31	2744
2016-03-31	2579
2016-06-30	3090
2016-09-30	2987
2016-12-31	4740
2017-03-31	4999
2017-06-30	3554
2017-09-30	3834
2017-12-31	3798
2018-03-31	3837
2018-06-30	3731
2018-09-30	3560
2018-12-31	3748
2019-03-31	3822
2019-06-30	3550
2019-09-30	3474
2019-12-31	3674
2020-03-31	3416
2020-06-30	3465
2020-09-30	3380
2020-12-31	3233
2021-03-31	3275
2021-06-30	3807
2021-09-30	3378
2021-12-31	3108
2022-03-31	2739
2022-06-30	3229
2022-09-30	3230
2022-12-31	2717
2023-03-31	2635
2023-06-30	2449
2023-09-30	2298