Quarterly US dollars
1999-03-31 38575
1999-06-30 31610
1999-09-30 40705
1999-12-31 38093
2000-03-31 43995
2000-06-30 37752
2000-09-30 29704
2000-12-31 29901
2001-03-31 39227
2001-06-30 37843
2001-09-30 45120
2001-12-31 38026
2002-03-31 41456
2002-06-30 46579
2002-09-30 46077
2002-12-31 38189
2003-03-31 40775
2003-06-30 38374
2003-09-30 43530
2003-12-31 47342
2004-03-31 68416
2004-06-30 56060
2004-09-30 53024
2004-12-31 57352
2005-03-31 74399
2005-06-30 67360
2005-09-30 68371
2005-12-31 63687
2006-03-31 67651
2006-06-30 71112
2006-09-30 72776
2006-12-31 79164
2007-03-31 99051
2007-06-30 115997
2007-09-30 118564
2007-12-31 128386
2008-03-31 119668
2008-06-30 113494
2008-09-30 91084
2008-12-31 71451
2009-03-31 72808
2009-06-30 71237
2009-09-30 72383
2009-12-31 67695
2010-03-31 52856
2010-06-30 57478
2010-09-30 60276
2010-12-31 57393
2011-03-31 57730
2011-06-30 49622
2011-09-30 36386
2011-12-31 37368
2012-03-31 41700
2012-06-30 36182
2012-09-30 36118
2012-12-31 37236
2013-03-31 38947
2013-06-30 30880
2013-09-30 33331
2013-12-31 31110
2014-03-31 26083
2014-06-30 36658
2014-09-30 26945
2014-12-31 24827
2015-03-31 30238
2015-06-30 29922
2015-09-30 29415
2015-12-31 26553
2016-03-31 27567
2016-06-30 25596
2016-09-30 25355
2016-12-31 24375
2017-03-31 24466
2017-06-30 30765
2017-09-30 29576
2017-12-31 38013
2018-03-31 36633
2018-06-30 33159
2018-09-30 32555
2018-12-31 23595
2019-03-31 17957
2019-06-30 15088
2019-09-30 24523
2019-12-31 19136
2020-03-31 22329
2020-06-30 18662
2020-09-30 23155
2020-12-31 16921
2021-03-31 24484
2021-06-30 23962
2021-09-30 21985
2021-12-31 16975
2022-03-31 26994
2022-06-30 27189
2022-09-30 20780
2022-12-31 28866
2023-03-31 19658
2023-06-30 26896
2023-09-30 27562