Quarter	US dollars
2004-12-31	772
2005-03-31	870
2005-06-30	950
2005-09-30	1160
2005-12-31	1124
2006-03-31	1141
2006-06-30	1185
2006-09-30	1582
2006-12-31	1211
2007-03-31	1320
2007-06-30	1390
2007-09-30	1416
2007-12-31	1541
2008-03-31	1793
2008-06-30	1910
2008-09-30	1855
2008-12-31	1745
2009-03-31	1882
2009-06-30	2014
2009-09-30	2012
2009-12-31	2020
2010-03-31	2037
2010-06-30	1978
2010-09-30	2264
2010-12-31	2466
2011-03-31	2666
2011-06-30	2818
2011-09-30	2655
2011-12-31	2560
2012-03-31	2662
2012-06-30	2362
2012-09-30	2374
2013-12-31	3061
2014-03-31	2673
2014-06-30	2845
2014-09-30	3278
2014-12-31	3351
2015-03-31	3219
2015-06-30	3369
2015-09-30	2923
2015-12-31	2939
2016-03-31	3006
2016-06-30	2964
2016-09-30	3026
2016-12-31	2934
2017-03-31	3008
2017-06-30	3246
2017-09-30	3394
2017-12-31	3226
2018-03-31	3115
2018-06-30	3260
2018-09-30	3204
2018-12-31	3035
2019-03-31	2928
2019-06-30	3106
2019-09-30	3042
2019-12-31	2930
2020-03-31	2947
2020-06-30	2932
2020-09-30	3062
2020-12-31	2986
2021-03-31	2838
2021-06-30	2870
2021-09-30	2966
2021-12-31	2910
2022-03-31	2384
2022-06-30	1954
2022-09-30	1936
2022-12-31	1787
2023-03-31	1652
2023-06-30	1644
2023-09-30	1503