Quarter	US dollars
2004-12-31	397
2005-03-31	399
2005-06-30	462
2005-09-30	492
2005-12-31	530
2006-03-31	552
2006-06-30	690
2006-09-30	712
2006-12-31	1117
2007-03-31	865
2007-06-30	1063
2007-09-30	1224
2007-12-31	1382
2008-03-31	1860
2008-06-30	2108
2008-09-30	3671
2008-12-31	3180
2009-03-31	1724
2009-06-30	1838
2009-09-30	1916
2009-12-31	1773
2010-03-31	2773
2010-06-30	2418
2010-09-30	2555
2010-12-31	2503
2011-03-31	2174
2011-06-30	2397
2011-09-30	2772
2011-12-31	2313
2012-03-31	2231
2012-06-30	2723
2012-09-30	3302
2013-03-31	4000
2014-03-31	4337
2014-06-30	5570
2014-09-30	6127
2014-12-31	5880
2015-03-31	6047
2015-06-30	5633
2015-09-30	5626
2015-12-31	5416
2016-03-31	4282
2016-06-30	3729
2016-09-30	3501
2016-12-31	3388
2017-03-31	3338
2017-06-30	2365
2017-09-30	3122
2017-12-31	3380
2018-03-31	3741
2018-06-30	3880
2018-09-30	3389
2018-12-31	3715
2019-03-31	4704
2019-06-30	5381
2019-09-30	5126
2019-12-31	4440
2020-03-31	4814
2020-06-30	4506
2020-09-30	3729
2020-12-31	3303
2021-03-31	2830
2021-06-30	2849
2021-09-30	3033
2021-12-31	2961
2022-03-31	2804
2022-06-30	2891
2022-09-30	2956
2022-12-31	2131
2023-03-31	2691
2023-06-30	2450
2023-09-30	2047