Quarter	US dollars
2004-12-31	1244
2005-03-31	1312
2005-06-30	1237
2005-09-30	1512
2005-12-31	1581
2006-03-31	1733
2006-06-30	1899
2006-09-30	1945
2006-12-31	2403
2007-03-31	4315
2007-06-30	4127
2007-09-30	5831
2007-12-31	5648
2008-03-31	6360
2008-06-30	6094
2008-09-30	6850
2008-12-31	6160
2009-03-31	5870
2009-06-30	6077
2009-09-30	6154
2009-12-31	6516
2010-03-31	6865
2010-06-30	8009
2010-09-30	9658
2010-12-31	11333
2011-03-31	8796
2011-06-30	9446
2011-09-30	8646
2011-12-31	8265
2012-03-31	8027
2012-06-30	7989
2012-09-30	7164
2012-12-31	6755
2013-03-31	6932
2013-06-30	6384
2013-09-30	7088
2013-12-31	6347
2014-03-31	5966
2014-06-30	6440
2014-09-30	7707
2014-12-31	7799
2015-03-31	8136
2015-06-30	7828
2015-09-30	7737
2015-12-31	6591
2016-03-31	6868
2016-06-30	6768
2016-09-30	6260
2016-12-31	6102
2017-03-31	7902
2017-06-30	7888
2017-09-30	5898
2017-12-31	4789
2018-03-31	5175
2018-06-30	4869
2018-09-30	4440
2018-12-31	4552
2019-03-31	4372
2019-06-30	5156
2019-09-30	4741
2019-12-31	6206
2020-03-31	5792
2020-06-30	6259
2020-09-30	7193
2020-12-31	7193
2021-03-31	7480
2021-06-30	6997
2021-09-30	6959
2021-12-31	7685
2022-03-31	7152
2022-06-30	7447
2022-09-30	6742
2022-12-31	6104
2023-03-31	8277
2023-06-30	9573
2023-09-30	8973