Quarterly US dollars
1999-03-31 10760
1999-06-30 11690
1999-09-30 13489
1999-12-31 12504
2000-03-31 13689
2000-06-30 12696
2000-09-30 9708
2000-12-31 10330
2001-03-31 11198
2001-06-30 9513
2001-09-30 10485
2001-12-31 9517
2002-03-31 10031
2002-06-30 10293
2002-09-30 7895
2002-12-31 6973
2003-03-31 9490
2003-06-30 11647
2003-09-30 11508
2003-12-31 11950
2004-03-31 17215
2004-06-30 15478
2004-09-30 21527
2004-12-31 19151
2005-03-31 18590
2005-06-30 14915
2005-09-30 13301
2005-12-31 15161
2006-03-31 19628
2006-06-30 20786
2006-09-30 22860
2006-12-31 18824
2007-03-31 22716
2007-06-30 23259
2007-09-30 32714
2007-12-31 29470
2008-03-31 28856
2008-06-30 20392
2008-09-30 18654
2008-12-31 13374
2009-03-31 15620
2009-06-30 13437
2009-09-30 14167
2009-12-31 11747
2010-03-31 15444
2010-06-30 13244
2010-09-30 15910
2010-12-31 12256
2011-03-31 15606
2011-06-30 15247
2011-09-30 14996
2011-12-31 14246
2012-03-31 13361
2012-06-30 13228
2012-09-30 15714
2012-12-31 17847
2013-03-31 15951
2013-06-30 16999
2013-09-30 17723
2013-12-31 17766
2014-03-31 19011
2014-06-30 17640
2014-09-30 16958
2014-12-31 18479
2015-03-31 16658
2015-06-30 15517
2015-09-30 14138
2015-12-31 17969
2016-03-31 17266
2016-06-30 18827
2016-09-30 21556
2016-12-31 18355
2017-03-31 18485
2017-06-30 20968
2017-09-30 21516
2017-12-31 20995
2018-03-31 21622
2018-06-30 21975
2018-09-30 20470
2018-12-31 16311
2019-03-31 18261
2019-06-30 15184
2019-09-30 15323
2019-12-31 16097
2020-03-31 16772
2020-06-30 13817
2020-09-30 14491
2020-12-31 15302
2021-03-31 13571
2021-06-30 13830
2021-09-30 13419
2021-12-31 14123
2022-03-31 11664
2022-06-30 11541
2022-09-30 11407
2022-12-31 9819
2023-03-31 11224
2023-06-30 11196
2023-09-30 13673