Quarterly US dollars
1999-03-31 6745
1999-06-30 6670
1999-09-30 6955
1999-12-31 6799
2000-03-31 7111
2000-06-30 6866
2000-09-30 7443
2000-12-31 9588
2001-03-31 7935
2001-06-30 7181
2001-09-30 7982
2001-12-31 8222
2002-03-31 9456
2002-06-30 10196
2002-09-30 10762
2002-12-31 12181
2003-03-31 15963
2003-06-30 18637
2003-09-30 18846
2003-12-31 19206
2004-03-31 17818
2004-06-30 23022
2004-09-30 27242
2004-12-31 24806
2005-03-31 39371
2005-06-30 35641
2005-09-30 35396
2005-12-31 38183
2006-03-31 33418
2006-06-30 44402
2006-09-30 49508
2006-12-31 53699
2007-03-31 54476
2007-06-30 52609
2007-09-30 80411
2007-12-31 65899
2008-03-31 60021
2008-06-30 64151
2008-09-30 69249
2008-12-31 48765
2009-03-31 45266
2009-06-30 33239
2009-09-30 33025
2009-12-31 22333
2010-03-31 18696
2010-06-30 19395
2010-09-30 20042
2010-12-31 14017
2011-03-31 17990
2011-06-30 13022
2011-09-30 19191
2011-12-31 16731
2012-03-31 17249
2012-06-30 16463
2012-09-30 16150
2012-12-31 19669
2013-03-31 22212
2013-06-30 17539
2013-09-30 20032
2013-12-31 25349
2014-03-31 22680
2014-06-30 16851
2014-09-30 10741
2014-12-31 16993
2015-03-31 16478
2015-06-30 27093
2015-09-30 27519
2015-12-31 24453
2016-03-31 24997
2016-06-30 25037
2016-09-30 21198
2016-12-31 20709
2017-03-31 23992
2017-06-30 24496
2017-09-30 24290
2017-12-31 30261
2018-03-31 29346
2018-06-30 25561
2018-09-30 23980
2018-12-31 28071
2019-03-31 24723
2019-06-30 26688
2019-09-30 22925
2019-12-31 26907
2020-03-31 26192
2020-06-30 24936
2020-09-30 20486
2020-12-31 23623
2021-03-31 24206
2021-06-30 24421
2021-09-30 26437
2021-12-31 39900
2022-03-31 37599
2022-06-30 33021
2022-09-30 41951
2022-12-31 44948
2023-03-31 46645
2023-06-30 39005
2023-09-30 40696