Quarter	US dollars
2004-12-31	1336
2005-03-31	1906
2005-06-30	1773
2005-09-30	2211
2005-12-31	2274
2006-03-31	2843
2006-06-30	3212
2006-09-30	3572
2006-12-31	4076
2007-03-31	4784
2007-06-30	5532
2007-09-30	6302
2007-12-31	6654
2008-03-31	7554
2008-06-30	8894
2008-09-30	8545
2008-12-31	7706
2009-03-31	6922
2009-06-30	6515
2009-09-30	6757
2009-12-31	6600
2010-03-31	6855
2010-06-30	7310
2010-09-30	6746
2010-12-31	7138
2011-03-31	7691
2011-06-30	8401
2011-09-30	8678
2011-12-31	8261
2012-03-31	7922
2012-06-30	7713
2012-09-30	7808
2012-12-31	7052
2013-03-31	9840
2013-06-30	9919
2013-09-30	9619
2013-12-31	10211
2014-03-31	9849
2014-06-30	9280
2014-09-30	9262
2014-12-31	7231
2015-03-31	7183
2015-06-30	7750
2015-09-30	7837
2015-12-31	7322
2016-03-31	6164
2016-06-30	6236
2016-09-30	5928
2016-12-31	6092
2017-03-31	5708
2017-06-30	4020
2017-09-30	3650
2017-12-31	3880
2018-03-31	3824
2018-06-30	3909
2018-09-30	4842
2018-12-31	4252
2019-03-31	4069
2019-06-30	5101
2019-09-30	5246
2019-12-31	5472
2020-03-31	6025
2020-06-30	5343
2020-09-30	6493
2020-12-31	5737
2021-03-31	5725
2021-06-30	5811
2021-09-30	6230
2021-12-31	6726
2022-03-31	7144
2022-06-30	7307
2022-09-30	7371
2022-12-31	7916
2023-03-31	8540
2023-06-30	8839
2023-09-30	9431