Quarterly US dollars
1999-03-31 7110
1999-06-30 5529
1999-09-30 4935
1999-12-31 5231
2000-03-31 6017
2000-06-30 4736
2000-09-30 4068
2000-12-31 3395
2001-03-31 2918
2001-06-30 2915
2001-09-30 2850
2001-12-31 3857
2002-03-31 4782
2002-06-30 4198
2002-09-30 3322
2002-12-31 4785
2003-03-31 3406
2003-06-30 3329
2003-09-30 4595
2003-12-31 3436
2004-03-31 4340
2004-06-30 3747
2004-09-30 3121
2004-12-31 3447
2005-03-31 2336
2005-06-30 2338
2005-09-30 3104
2005-12-31 1745
2006-03-31 5043
2006-06-30 6138
2006-09-30 9673
2006-12-31 5115
2007-03-31 5087
2007-06-30 6706
2007-09-30 6268
2007-12-31 6900
2008-03-31 8388
2008-06-30 8781
2008-09-30 6800
2008-12-31 4936
2009-03-31 5941
2009-06-30 7321
2009-09-30 9239
2009-12-31 10753
2010-03-31 9961
2010-06-30 10858
2010-09-30 13438
2010-12-31 13259
2011-03-31 14473
2011-06-30 17195
2011-09-30 15735
2011-12-31 17271
2012-03-31 20785
2012-06-30 18361
2012-09-30 16316
2012-12-31 17736
2013-03-31 17729
2013-06-30 14467
2013-09-30 23727
2013-12-31 25249
2014-03-31 20636
2014-06-30 19768
2014-09-30 20577
2014-12-31 21275
2015-03-31 21737
2015-06-30 21087
2015-09-30 19916
2015-12-31 23472
2016-03-31 10368
2016-06-30 10945
2016-09-30 10101
2016-12-31 10232
2017-03-31 9994
2017-06-30 8170
2017-09-30 7878
2017-12-31 8096
2018-03-31 8349
2018-06-30 8220
2018-09-30 7184
2018-12-31 7670
2019-03-31 8584
2019-06-30 9655
2019-09-30 10504
2019-12-31 8809
2020-03-31 7638
2020-06-30 8094
2020-09-30 7460
2020-12-31 10006
2021-03-31 8949
2021-06-30 9153
2021-09-30 7919
2021-12-31 9205
2022-03-31 10208
2022-06-30 10339
2022-09-30 11087
2022-12-31 14916
2023-03-31 16333
2023-06-30 18972
2023-09-30 19688