Quarter	US dollars
2004-12-31	315
2005-03-31	380
2005-06-30	50
2005-09-30	472
2005-12-31	474
2006-03-31	586
2006-06-30	832
2006-09-30	646
2006-12-31	845
2007-03-31	1171
2007-06-30	1104
2007-09-30	1216
2007-12-31	1085
2008-03-31	1369
2008-06-30	1626
2008-09-30	1852
2008-12-31	1885
2009-03-31	1843
2009-06-30	1938
2009-09-30	1857
2009-12-31	1789
2010-03-31	1884
2010-06-30	1957
2010-09-30	1834
2010-12-31	1966
2011-03-31	2093
2011-06-30	2043
2011-09-30	2008
2011-12-31	2004
2012-03-31	2608
2012-06-30	2430
2012-09-30	2400
2012-12-31	2708
2013-03-31	3933
2013-06-30	4182
2013-09-30	3870
2013-12-31	3687
2014-03-31	3815
2014-06-30	3785
2014-09-30	4157
2014-12-31	4099
2015-03-31	4243
2015-06-30	4307
2015-09-30	4070
2015-12-31	4118
2016-03-31	4290
2016-06-30	4238
2016-09-30	4578
2016-12-31	4265
2017-03-31	3581
2017-06-30	3618
2017-09-30	3365
2017-12-31	3448
2018-03-31	3883
2018-06-30	4060
2018-09-30	3031
2018-12-31	3045
2019-03-31	3000
2019-06-30	3211
2019-09-30	3358
2019-12-31	3616
2020-03-31	3804
2020-06-30	3789
2020-09-30	3797
2020-12-31	3723
2021-03-31	3664
2021-06-30	4050
2021-09-30	3925
2021-12-31	3865
2022-03-31	3846
2022-06-30	3361
2022-09-30	3360
2022-12-31	3108
2023-03-31	3061
2023-06-30	2958
2023-09-30	3043