Quarter	US dollars
2004-12-31	1928
2005-03-31	2034
2005-06-30	2043
2005-09-30	2209
2005-12-31	2231
2006-03-31	2437
2006-06-30	2704
2006-09-30	2825
2006-12-31	5816
2007-03-31	5923
2007-06-30	6527
2007-09-30	6397
2007-12-31	6478
2008-03-31	6467
2008-06-30	6709
2008-09-30	6795
2008-12-31	6359
2009-03-31	6260
2009-06-30	6184
2009-09-30	6151
2009-12-31	6068
2010-03-31	6100
2010-06-30	5911
2010-09-30	6218
2010-12-31	6254
2011-03-31	6508
2011-06-30	6663
2011-09-30	7398
2011-12-31	6877
2012-03-31	7009
2012-06-30	7252
2012-09-30	7219
2012-12-31	7306
2013-03-31	7026
2013-06-30	7013
2013-09-30	7197
2013-12-31	2183
2014-03-31	2157
2014-06-30	2224
2014-09-30	2189
2014-12-31	2099
2015-03-31	1998
2015-06-30	1832
2015-09-30	1672
2015-12-31	1317
2016-03-31	1306
2016-06-30	1223
2016-09-30	1151
2016-12-31	750
2017-03-31	725
2017-06-30	750
2017-09-30	801
2017-12-31	916
2018-03-31	843
2018-06-30	779
2018-09-30	762
2018-12-31	775
2019-03-31	762
2019-06-30	964
2019-09-30	979
2019-12-31	984
2020-03-31	1033
2020-06-30	966
2020-09-30	1074
2020-12-31	945
2021-03-31	955
2021-06-30	924
2021-09-30	918
2021-12-31	896
2022-03-31	863
2022-06-30	973
2022-09-30	872
2022-12-31	818
2023-03-31	806
2023-06-30	747
2023-09-30	703