Quarter	US dollars
2004-12-31	1127
2005-03-31	1187
2005-06-30	1058
2005-09-30	1845
2005-12-31	2553
2006-03-31	3103
2006-06-30	2547
2006-09-30	2627
2006-12-31	3579
2007-03-31	3758
2007-06-30	5483
2007-09-30	5966
2007-12-31	6508
2008-03-31	7747
2008-06-30	8030
2008-09-30	7310
2008-12-31	5351
2009-03-31	4692
2009-06-30	4725
2009-09-30	4911
2009-12-31	4192
2010-03-31	4286
2010-06-30	5796
2010-09-30	6760
2010-12-31	5439
2011-03-31	6082
2011-06-30	5933
2011-09-30	5465
2011-12-31	5704
2012-03-31	6034
2012-06-30	5754
2012-09-30	5827
2012-12-31	5390
2013-03-31	5631
2013-06-30	5527
2013-09-30	6257
2013-12-31	9426
2014-03-31	7823
2014-06-30	7280
2014-09-30	7498
2014-12-31	5695
2015-03-31	5468
2015-06-30	5415
2015-09-30	4326
2015-12-31	4544
2016-03-31	3809
2016-06-30	3610
2016-09-30	3266
2016-12-31	2986
2017-03-31	3134
2017-06-30	2566
2017-09-30	2796
2017-12-31	2197
2018-03-31	2670
2018-06-30	2168
2018-09-30	1728
2018-12-31	1878
2019-03-31	1769
2019-06-30	1908
2019-09-30	1807
2019-12-31	1692
2020-03-31	1550
2020-06-30	1397
2020-09-30	1464
2020-12-31	1878
2021-03-31	1483
2021-06-30	739
2021-09-30	760
2021-12-31	647
2022-03-31	344
2022-06-30	199
2022-09-30	168
2022-12-31	170
2023-03-31	152
2023-06-30	150
2023-09-30	103