Quarter	US dollars
2004-12-31	1083
2005-03-31	1076
2005-06-30	1251
2005-09-30	1882
2005-12-31	2786
2006-03-31	2822
2006-06-30	2608
2006-09-30	2840
2006-12-31	2755
2007-03-31	2687
2007-06-30	3214
2007-09-30	3468
2007-12-31	2907
2008-03-31	3118
2008-06-30	2301
2008-09-30	2155
2008-12-31	1752
2009-03-31	2992
2009-06-30	3065
2009-09-30	1978
2009-12-31	1781
2010-03-31	1781
2010-06-30	1694
2010-09-30	1846
2010-12-31	2021
2011-03-31	11378
2011-06-30	9675
2011-09-30	1743
2011-12-31	1882
2012-03-31	2109
2012-06-30	2031
2012-09-30	2191
2012-12-31	2362
2013-03-31	2446
2013-06-30	2475
2013-09-30	2849
2013-12-31	3015
2014-03-31	2366
2014-06-30	2693
2014-09-30	2453
2014-12-31	2118
2015-03-31	1952
2015-06-30	2105
2015-09-30	2198
2015-12-31	2349
2016-03-31	2531
2016-06-30	3064
2016-09-30	2910
2016-12-31	2820
2017-03-31	3124
2017-06-30	3324
2017-09-30	3755
2017-12-31	4152
2018-03-31	4318
2018-06-30	3560
2018-09-30	3985
2018-12-31	4310
2019-03-31	4287
2019-06-30	4222
2019-09-30	4319
2019-12-31	4456
2020-03-31	3611
2020-06-30	3396
2020-09-30	3426
2020-12-31	2352
2021-03-31	1771
2021-06-30	2206
2021-09-30	2296
2021-12-31	1780
2022-03-31	2857
2022-06-30	2207
2022-09-30	2286
2022-12-31	2144
2023-03-31	1934
2023-06-30	2557
2023-09-30	1695