Quarterly US dollars
1999-03-31 1551
1999-06-30 1428
1999-09-30 1531
1999-12-31 1511
2000-03-31 1757
2000-06-30 2079
2000-09-30 2325
2000-12-31 2629
2001-03-31 2901
2001-06-30 3033
2001-09-30 3578
2001-12-31 3035
2002-03-31 2635
2002-06-30 3034
2002-09-30 3287
2002-12-31 2814
2003-03-31 3087
2003-06-30 2773
2003-09-30 3227
2003-12-31 3872
2004-03-31 4025
2004-06-30 4237
2004-09-30 4699
2004-12-31 5517
2005-03-31 6286
2005-06-30 8272
2005-09-30 10522
2005-12-31 11650
2006-03-31 13673
2006-06-30 16152
2006-09-30 17782
2006-12-31 18391
2007-03-31 19851
2007-06-30 21180
2007-09-30 19892
2007-12-31 20396
2008-03-31 22080
2008-06-30 21970
2008-09-30 24543
2008-12-31 16069
2009-03-31 14793
2009-06-30 15790
2009-09-30 16086
2009-12-31 15713
2010-03-31 15076
2010-06-30 18555
2010-09-30 14322
2010-12-31 11926
2011-03-31 15816
2011-06-30 12082
2011-09-30 11623
2011-12-31 12191
2012-03-31 15135
2012-06-30 14073
2012-09-30 14105
2012-12-31 11082
2013-03-31 13175
2013-06-30 11424
2013-09-30 11293
2013-12-31 10904
2014-03-31 12068
2014-06-30 10954
2014-09-30 11846
2014-12-31 11380
2015-03-31 11076
2015-06-30 11279
2015-09-30 12000
2015-12-31 11603
2016-03-31 11772
2016-06-30 13467
2016-09-30 13565
2016-12-31 12243
2017-03-31 11560
2017-06-30 11455
2017-09-30 10812
2017-12-31 10641
2018-03-31 10174
2018-06-30 10158
2018-09-30 10099
2018-12-31 11220
2019-03-31 10401
2019-06-30 9804
2019-09-30 10067
2019-12-31 9904
2020-03-31 9722
2020-06-30 9951
2020-09-30 9564
2020-12-31 9291
2021-03-31 8706
2021-06-30 7860
2021-09-30 8535
2021-12-31 8615
2022-03-31 8222
2022-06-30 8196
2022-09-30 8858
2022-12-31 9014
2023-03-31 8249
2023-06-30 7734
2023-09-30 7555