Quarter	US dollars
2004-12-31	1413
2005-03-31	1871
2005-06-30	1543
2005-09-30	1679
2005-12-31	2290
2006-03-31	1597
2006-06-30	1517
2006-09-30	1455
2006-12-31	1429
2007-03-31	1573
2007-06-30	1964
2007-09-30	2292
2007-12-31	3379
2008-03-31	3118
2008-06-30	2695
2008-09-30	2659
2008-12-31	1882
2009-03-31	1929
2009-06-30	1364
2009-09-30	1252
2009-12-31	1492
2010-03-31	1958
2010-06-30	2026
2010-09-30	1602
2010-12-31	1519
2011-03-31	1672
2011-06-30	2099
2011-09-30	2237
2011-12-31	2424
2012-03-31	2471
2012-06-30	1906
2012-09-30	1594
2013-06-30	1348
2014-03-31	1947
2014-06-30	1467
2014-09-30	1817
2014-12-31	2396
2015-03-31	2765
2015-06-30	2970
2015-09-30	3794
2015-12-31	2601
2016-03-31	2305
2016-06-30	2456
2016-09-30	2028
2016-12-31	2101
2017-03-31	2227
2017-06-30	2177
2017-09-30	2231
2017-12-31	2553
2018-03-31	2656
2018-06-30	2222
2018-09-30	2058
2018-12-31	1937
2019-03-31	2656
2019-06-30	2756
2019-09-30	2498
2019-12-31	2565
2020-03-31	3314
2020-06-30	3376
2020-09-30	3280
2020-12-31	3102
2021-03-31	3286
2021-06-30	3279
2021-09-30	3499
2021-12-31	3509
2022-03-31	3550
2022-06-30	3669
2022-09-30	3784
2022-12-31	4215
2023-03-31	3688
2023-06-30	3889
2023-09-30	5542