Quarterly US dollars
1999-03-31 1659
1999-06-30 1550
1999-09-30 1441
1999-12-31 1614
2000-03-31 1766
2000-06-30 1890
2000-09-30 1938
2000-12-31 1978
2001-03-31 2425
2001-06-30 2499
2001-09-30 2447
2001-12-31 2611
2002-03-31 3226
2002-06-30 3206
2002-09-30 3678
2002-12-31 2976
2003-03-31 3085
2003-06-30 3033
2003-09-30 3308
2003-12-31 2909
2004-03-31 2865
2004-06-30 3107
2004-09-30 2692
2004-12-31 3231
2005-03-31 3200
2005-06-30 3516
2005-09-30 3421
2005-12-31 3056
2006-03-31 3975
2006-06-30 3478
2006-09-30 3264
2006-12-31 4056
2007-03-31 4919
2007-06-30 4415
2007-09-30 4679
2007-12-31 5359
2008-03-31 4041
2008-06-30 4949
2008-09-30 4005
2008-12-31 4348
2009-03-31 4212
2009-06-30 3911
2009-09-30 4856
2009-12-31 4415
2010-03-31 5196
2010-06-30 4198
2010-09-30 5650
2010-12-31 4157
2011-03-31 5084
2011-06-30 4972
2011-09-30 3331
2011-12-31 3416
2012-03-31 4907
2012-06-30 3628
2012-09-30 4821
2012-12-31 4969
2013-03-31 5144
2013-06-30 4762
2013-09-30 4504
2013-12-31 4383
2014-03-31 3309
2014-06-30 4380
2014-09-30 4191
2014-12-31 3946
2015-03-31 3524
2015-06-30 4071
2015-09-30 3693
2015-12-31 3403
2016-03-31 3675
2016-06-30 3641
2016-09-30 3613
2016-12-31 3612
2017-03-31 3867
2017-06-30 4193
2017-09-30 4139
2017-12-31 4351
2018-03-31 4547
2018-06-30 4492
2018-09-30 4069
2018-12-31 3352
2019-03-31 4091
2019-06-30 4255
2019-09-30 4474
2019-12-31 4503
2020-03-31 4446
2020-06-30 3308
2020-09-30 3655
2020-12-31 3451
2021-03-31 2614
2021-06-30 2401
2021-09-30 2379
2021-12-31 2329
2022-03-31 2005
2022-06-30 2383
2022-09-30 2054
2022-12-31 1801
2023-03-31 2382
2023-06-30 2585
2023-09-30 2142