Quarter	US dollars
1999-09-30	436
1999-12-31	366
2000-03-31	456
2000-06-30	474
2000-09-30	442
2000-12-31	492
2001-03-31	377
2001-06-30	609
2001-09-30	595
2001-12-31	702
2002-03-31	741
2002-06-30	755
2002-09-30	744
2002-12-31	435
2003-03-31	395
2003-06-30	361
2003-09-30	367
2003-12-31	66
2004-03-31	81
2004-06-30	71
2004-09-30	309
2004-12-31	280
2005-03-31	805
2005-06-30	1127
2005-09-30	656
2005-12-31	445
2006-03-31	2354
2006-06-30	2275
2006-09-30	2145
2006-12-31	3135
2007-03-31	1204
2007-06-30	1053
2007-09-30	1742
2007-12-31	1901
2008-03-31	1821
2008-06-30	1270
2008-09-30	225
2008-12-31	243
2009-03-31	219
2009-06-30	336
2009-09-30	289
2009-12-31	544
2010-03-31	623
2010-06-30	637
2010-09-30	789
2010-12-31	1025
2011-03-31	943
2011-06-30	816
2011-09-30	781
2011-12-31	711
2012-03-31	842
2012-06-30	562
2012-09-30	562
2012-12-31	458
2013-03-31	448
2013-06-30	432
2013-09-30	316
2013-12-31	293
2014-03-31	272
2014-06-30	381
2014-09-30	374
2014-12-31	364
2015-03-31	341
2015-06-30	321
2015-09-30	360
2015-12-31	185
2016-03-31	180
2016-06-30	248
2016-09-30	225
2016-12-31	217
2017-03-31	125
2017-06-30	84
2017-09-30	74
2017-12-31	53
2018-03-31	51
2018-06-30	28
2018-09-30	21
2018-12-31	38
2019-03-31	44
2019-06-30	67
2019-09-30	155
2019-12-31	50
2020-03-31	148
2020-06-30	109
2020-09-30	102
2020-12-31	104
2021-03-31	108
2021-06-30	108
2021-09-30	81
2021-12-31	93
2022-03-31	80
2022-06-30	76
2022-09-30	84
2022-12-31	54
2023-03-31	45
2023-06-30	48
2023-09-30	45