Quarter	US dollars
1999-09-30	632
1999-12-31	1117
2000-03-31	1192
2000-06-30	1149
2000-09-30	1119
2000-12-31	804
2001-03-31	897
2001-06-30	865
2001-09-30	853
2001-12-31	881
2002-03-31	916
2002-06-30	1004
2002-09-30	1035
2002-12-31	1099
2003-03-31	1196
2003-06-30	1302
2003-09-30	1317
2003-12-31	1293
2004-03-31	1189
2004-06-30	1293
2004-09-30	1225
2004-12-31	1321
2005-03-31	1229
2005-06-30	1226
2005-09-30	1274
2005-12-31	1315
2006-03-31	1497
2006-06-30	1306
2006-09-30	663
2006-12-31	587
2007-03-31	610
2007-06-30	622
2007-09-30	581
2007-12-31	701
2008-03-31	2788
2008-06-30	2734
2008-09-30	2539
2008-12-31	2215
2009-03-31	2357
2009-06-30	2103
2009-09-30	2297
2009-12-31	2172
2010-03-31	2129
2010-06-30	2089
2010-09-30	2039
2010-12-31	1919
2011-03-31	2010
2011-06-30	1797
2011-09-30	1693
2011-12-31	2202
2012-03-31	2033
2012-06-30	2300
2012-09-30	2179
2012-12-31	2139
2013-03-31	2312
2013-06-30	2328
2013-09-30	2290
2013-12-31	2719
2014-03-31	2454
2014-06-30	2903
2014-09-30	2941
2014-12-31	3157
2015-03-31	3035
2015-06-30	2875
2015-09-30	2767
2015-12-31	3010
2016-03-31	2969
2016-06-30	3282
2016-09-30	3165
2016-12-31	4927
2017-03-31	5183
2017-06-30	3863
2017-09-30	4042
2017-12-31	4130
2018-03-31	4231
2018-06-30	4090
2018-09-30	3839
2018-12-31	3924
2019-03-31	3988
2019-06-30	3734
2019-09-30	3777
2019-12-31	3950
2020-03-31	3777
2020-06-30	3788
2020-09-30	3794
2020-12-31	3564
2021-03-31	3648
2021-06-30	4135
2021-09-30	3829
2021-12-31	3458
2022-03-31	3179
2022-06-30	3739
2022-09-30	3695
2022-12-31	3518
2023-03-31	3285
2023-06-30	3051
2023-09-30	3034