Quarterly US dollars
1999-03-31 12774
1999-06-30 12108
1999-09-30 12896
1999-12-31 11370
2000-03-31 13098
2000-06-30 13354
2000-09-30 13392
2000-12-31 11394
2001-03-31 13816
2001-06-30 12668
2001-09-30 13029
2001-12-31 11071
2002-03-31 12045
2002-06-30 12214
2002-09-30 13189
2002-12-31 13318
2003-03-31 15137
2003-06-30 16184
2003-09-30 13661
2003-12-31 14895
2004-03-31 17337
2004-06-30 17066
2004-09-30 14926
2004-12-31 15264
2005-03-31 17476
2005-06-30 16806
2005-09-30 18767
2005-12-31 15273
2006-03-31 16563
2006-06-30 17029
2006-09-30 16305
2006-12-31 17779
2007-03-31 16745
2007-06-30 17930
2007-09-30 20237
2007-12-31 18524
2008-03-31 15464
2008-06-30 14918
2008-09-30 12118
2008-12-31 14123
2009-03-31 15231
2009-06-30 13795
2009-09-30 12848
2009-12-31 10385
2010-03-31 11168
2010-06-30 12812
2010-09-30 13646
2010-12-31 10770
2011-03-31 12250
2011-06-30 9668
2011-09-30 13964
2011-12-31 12091
2012-03-31 10427
2012-06-30 9594
2012-09-30 10236
2012-12-31 7910
2013-03-31 8782
2013-06-30 8050
2013-09-30 8016
2013-12-31 6821
2014-03-31 9892
2014-06-30 10280
2014-09-30 9115
2014-12-31 8033
2015-03-31 8597
2015-06-30 8408
2015-09-30 10099
2015-12-31 9108
2016-03-31 8005
2016-06-30 10263
2016-09-30 9926
2016-12-31 6883
2017-03-31 8061
2017-06-30 7739
2017-09-30 6592
2017-12-31 6391
2018-03-31 8705
2018-06-30 6798
2018-09-30 6073
2018-12-31 4956
2019-03-31 5017
2019-06-30 5195
2019-09-30 5304
2019-12-31 4727
2020-03-31 4291
2020-06-30 4145
2020-09-30 5355
2020-12-31 5072
2021-03-31 5966
2021-06-30 5735
2021-09-30 5538
2021-12-31 4381
2022-03-31 4192
2022-06-30 4402
2022-09-30 4694
2022-12-31 3529
2023-03-31 3833
2023-06-30 3127
2023-09-30 3429