Quarter	US dollars
2004-12-31	1905
2005-03-31	2219
2005-06-30	1970
2005-09-30	2195
2005-12-31	2676
2006-03-31	2458
2006-06-30	2776
2006-09-30	2176
2006-12-31	2975
2007-03-31	2142
2007-06-30	2267
2007-09-30	2129
2007-12-31	2511
2008-03-31	3923
2008-06-30	2108
2008-09-30	3154
2008-12-31	1436
2009-03-31	1740
2009-06-30	3664
2009-09-30	3024
2009-12-31	2364
2010-03-31	2694
2010-06-30	1903
2010-09-30	1719
2010-12-31	1436
2011-03-31	2203
2011-06-30	1573
2011-09-30	2532
2011-12-31	1064
2012-03-31	2285
2012-06-30	2082
2012-09-30	2282
2012-12-31	2453
2013-03-31	2983
2013-06-30	3730
2013-09-30	3354
2013-12-31	4025
2014-03-31	3875
2014-06-30	4180
2014-09-30	4582
2014-12-31	4678
2015-03-31	5355
2015-06-30	4648
2015-09-30	4808
2015-12-31	3228
2016-03-31	3580
2016-06-30	2552
2016-09-30	2928
2016-12-31	1967
2017-03-31	2893
2017-06-30	2026
2017-09-30	1866
2017-12-31	2299
2018-03-31	2683
2018-06-30	2617
2018-09-30	2839
2018-12-31	3446
2019-03-31	4097
2019-06-30	2705
2019-09-30	2842
2019-12-31	1690
2020-03-31	2107
2020-06-30	1971
2020-09-30	1026
2020-12-31	1063
2021-03-31	2890
2021-06-30	3162
2021-09-30	3661
2021-12-31	1605
2022-03-31	3051
2022-06-30	2366
2022-09-30	2524
2022-12-31	2491
2023-03-31	3957
2023-06-30	4025
2023-09-30	3569