Quarterly US dollars
1999-03-31 14172
1999-06-30 11670
1999-09-30 13254
1999-12-31 10494
2000-03-31 12966
2000-06-30 13851
2000-09-30 13209
2000-12-31 14585
2001-03-31 12989
2001-06-30 10707
2001-09-30 14581
2001-12-31 11066
2002-03-31 10863
2002-06-30 16819
2002-09-30 15937
2002-12-31 13287
2003-03-31 14716
2003-06-30 15662
2003-09-30 12400
2003-12-31 11906
2004-03-31 12575
2004-06-30 14526
2004-09-30 16122
2004-12-31 15215
2005-03-31 18910
2005-06-30 19191
2005-09-30 19571
2005-12-31 17026
2006-03-31 19226
2006-06-30 18790
2006-09-30 21231
2006-12-31 22633
2007-03-31 27742
2007-06-30 24003
2007-09-30 25557
2007-12-31 29089
2008-03-31 29082
2008-06-30 32139
2008-09-30 29292
2008-12-31 30356
2009-03-31 27261
2009-06-30 28097
2009-09-30 26516
2009-12-31 32923
2010-03-31 40903
2010-06-30 37918
2010-09-30 37077
2010-12-31 29338
2011-03-31 29498
2011-06-30 29315
2011-09-30 28010
2011-12-31 23691
2012-03-31 22577
2012-06-30 20399
2012-09-30 19206
2012-12-31 19607
2013-03-31 17924
2013-06-30 17700
2013-09-30 18613
2013-12-31 18141
2014-03-31 18949
2014-06-30 19079
2014-09-30 16638
2014-12-31 17150
2015-03-31 15236
2015-06-30 15351
2015-09-30 15911
2015-12-31 15571
2016-03-31 16212
2016-06-30 16373
2016-09-30 12495
2016-12-31 10806
2017-03-31 9606
2017-06-30 9826
2017-09-30 10148
2017-12-31 10166
2018-03-31 10148
2018-06-30 6879
2018-09-30 7069
2018-12-31 7198
2019-03-31 5789
2019-06-30 6676
2019-09-30 7257
2019-12-31 6375
2020-03-31 7123
2020-06-30 4993
2020-09-30 5130
2020-12-31 4386
2021-03-31 2955
2021-06-30 2752
2021-09-30 2670
2021-12-31 2578
2022-03-31 1610
2022-06-30 1287
2022-09-30 1226
2022-12-31 1345
2023-03-31 1389
2023-06-30 917
2023-09-30 897