Quarterly US dollars
1997-09-30 1867
1997-12-31 3716
1998-03-31 4366
1998-06-30 2800
1998-09-30 2526
1998-12-31 3029
1999-03-31 2850
1999-06-30 3355
1999-09-30 3626
1999-12-31 4344
2000-03-31 4166
2000-06-30 4352
2000-09-30 4476
2000-12-31 4452
2001-03-31 4896
2001-06-30 5138
2001-09-30 5307
2001-12-31 5567
2002-03-31 5578
2002-06-30 6339
2002-09-30 6217
2002-12-31 6394
2003-03-31 6220
2003-06-30 6532
2003-09-30 7028
2003-12-31 7226
2004-03-31 8031
2004-06-30 8490
2004-09-30 8415
2004-12-31 9155
2005-03-31 12102
2005-06-30 10259
2005-09-30 10384
2005-12-31 9246
2006-03-31 10875
2006-06-30 11567
2006-09-30 14430
2006-12-31 12889
2007-03-31 16840
2007-06-30 18269
2007-09-30 20292
2007-12-31 21901
2008-03-31 22512
2008-06-30 21274
2008-09-30 20165
2008-12-31 18674
2009-03-31 17420
2009-06-30 17960
2009-09-30 18658
2009-12-31 17616
2010-03-31 16791
2010-06-30 16051
2010-09-30 16673
2010-12-31 14810
2011-03-31 14952
2011-06-30 10193
2011-09-30 10072
2011-12-31 11027
2012-03-31 13186
2012-06-30 11527
2012-09-30 12287
2012-12-31 12298
2013-03-31 13098
2013-06-30 11385
2013-09-30 12844
2013-12-31 12626
2014-03-31 12649
2014-06-30 14035
2014-09-30 14232
2014-12-31 14741
2015-03-31 15002
2015-06-30 18430
2015-09-30 20185
2015-12-31 14515
2016-03-31 14989
2016-06-30 13447
2016-09-30 15461
2016-12-31 15052
2017-03-31 15826
2017-06-30 19055
2017-09-30 17702
2017-12-31 14950
2018-03-31 16788
2018-06-30 15622
2018-09-30 16779
2018-12-31 18967
2019-03-31 16677
2019-06-30 17507
2019-09-30 15643
2019-12-31 17430
2020-03-31 17698
2020-06-30 16061
2020-09-30 17263
2020-12-31 19017
2021-03-31 18416
2021-06-30 18988
2021-09-30 18567
2021-12-31 17838
2022-03-31 19256
2022-06-30 17828
2022-09-30 20884
2022-12-31 21237
2023-03-31 23531
2023-06-30 22421
2023-09-30 20224