Quarter	US dollars
1999-09-30	538
1999-12-31	550
2000-03-31	560
2000-06-30	621
2000-09-30	789
2000-12-31	896
2001-03-31	1053
2001-06-30	993
2001-09-30	1227
2001-12-31	1127
2002-03-31	957
2002-06-30	2083
2002-09-30	2151
2002-12-31	2654
2003-03-31	2349
2003-06-30	2998
2003-09-30	2911
2003-12-31	2134
2004-03-31	2183
2004-06-30	1660
2004-09-30	1925
2004-12-31	2955
2005-03-31	2486
2005-06-30	3852
2005-09-30	3221
2005-12-31	3062
2006-03-31	2581
2006-06-30	3212
2006-09-30	2485
2006-12-31	2885
2007-03-31	3005
2007-06-30	4691
2007-09-30	5534
2007-12-31	6425
2008-03-31	9051
2008-06-30	8641
2008-09-30	7483
2008-12-31	14477
2009-03-31	9069
2009-06-30	8193
2009-09-30	8590
2009-12-31	7120
2010-03-31	7247
2010-06-30	8820
2010-09-30	9852
2010-12-31	7757
2011-03-31	7103
2011-06-30	7590
2011-09-30	11810
2011-12-31	11432
2012-03-31	10602
2012-06-30	9639
2012-09-30	8753
2012-12-31	8436
2013-03-31	7798
2013-06-30	4765
2013-09-30	5161
2013-12-31	4606
2014-03-31	6077
2014-06-30	5278
2014-09-30	6448
2014-12-31	5560
2015-03-31	6840
2015-06-30	5920
2015-09-30	5382
2015-12-31	4296
2016-03-31	5127
2016-06-30	4159
2016-09-30	3363
2016-12-31	2883
2017-03-31	2336
2017-06-30	2789
2017-09-30	2269
2017-12-31	2285
2018-03-31	2282
2018-06-30	2024
2018-09-30	2100
2018-12-31	2283
2019-03-31	2924
2019-06-30	3381
2019-09-30	8152
2019-12-31	6061
2020-03-31	7542
2020-06-30	7813
2020-09-30	7726
2020-12-31	8150
2021-03-31	6537
2021-06-30	6123
2021-09-30	5193
2021-12-31	4993
2022-03-31	5866
2022-06-30	8373
2022-09-30	10603
2022-12-31	10597
2023-03-31	9725
2023-06-30	9843
2023-09-30	10316