Quarter	US dollars
2004-12-31	1117
2005-03-31	1329
2005-06-30	1674
2005-09-30	1544
2005-12-31	1608
2006-03-31	1124
2006-06-30	1141
2006-09-30	1246
2006-12-31	1616
2007-03-31	1832
2007-06-30	2532
2007-09-30	1608
2007-12-31	2532
2008-03-31	3118
2008-06-30	3178
2008-09-30	2796
2008-12-31	2317
2009-03-31	2436
2009-06-30	2376
2009-09-30	2241
2009-12-31	1983
2010-03-31	2363
2010-06-30	6559
2010-09-30	7857
2010-12-31	8343
2011-03-31	8098
2011-06-30	7426
2011-09-30	5661
2011-12-31	6045
2012-03-31	6209
2012-06-30	6732
2012-09-30	5045
2012-12-31	4126
2013-03-31	4436
2013-06-30	4896
2013-09-30	5611
2013-12-31	6013
2014-03-31	8193
2014-06-30	7082
2014-09-30	5984
2014-12-31	5917
2015-03-31	6035
2015-06-30	6339
2015-09-30	5759
2015-12-31	3631
2016-03-31	2579
2016-06-30	4054
2016-09-30	3536
2016-12-31	2528
2017-03-31	2074
2017-06-30	3681
2017-09-30	3460
2017-12-31	3052
2018-03-31	2416
2018-06-30	3125
2018-09-30	2379
2018-12-31	1915
2019-03-31	1588
2019-06-30	2086
2019-09-30	1992
2019-12-31	2111
2020-03-31	2040
2020-06-30	1688
2020-09-30	2184
2020-12-31	2267
2021-03-31	1862
2021-06-30	3080
2021-09-30	2646
2021-12-31	1549
2022-03-31	1470
2022-06-30	2704
2022-09-30	2696
2022-12-31	1341
2023-03-31	1541
2023-06-30	2600
2023-09-30	2589