Quarterly US dollars
1999-03-31 16034
1999-06-30 15643
1999-09-30 12095
1999-12-31 6875
2000-03-31 8649
2000-06-30 9082
2000-09-30 6562
2000-12-31 7044
2001-03-31 9840
2001-06-30 10545
2001-09-30 9060
2001-12-31 7942
2002-03-31 8633
2002-06-30 11263
2002-09-30 11529
2002-12-31 11504
2003-03-31 14153
2003-06-30 17804
2003-09-30 14448
2003-12-31 17141
2004-03-31 20530
2004-06-30 16911
2004-09-30 19769
2004-12-31 24764
2005-03-31 19546
2005-06-30 17931
2005-09-30 20934
2005-12-31 16172
2006-03-31 16584
2006-06-30 15106
2006-09-30 21993
2006-12-31 22596
2007-03-31 20687
2007-06-30 18681
2007-09-30 19323
2007-12-31 19329
2008-03-31 20059
2008-06-30 17939
2008-09-30 19872
2008-12-31 18587
2009-03-31 19398
2009-06-30 19716
2009-09-30 21489
2009-12-31 26917
2010-03-31 18387
2010-06-30 15136
2010-09-30 17968
2010-12-31 16843
2011-03-31 17225
2011-06-30 16913
2011-09-30 16668
2011-12-31 16115
2012-03-31 28128
2012-06-30 27664
2012-09-30 26759
2012-12-31 29351
2013-03-31 32756
2013-06-30 25470
2013-09-30 25738
2013-12-31 28679
2014-03-31 27301
2014-06-30 25479
2014-09-30 24900
2014-12-31 24223
2015-03-31 22508
2015-06-30 23285
2015-09-30 21302
2015-12-31 19254
2016-03-31 21606
2016-06-30 19596
2016-09-30 20955
2016-12-31 18595
2017-03-31 17101
2017-06-30 18676
2017-09-30 19235
2017-12-31 21701
2018-03-31 18967
2018-06-30 20245
2018-09-30 22142
2018-12-31 18734
2019-03-31 19559
2019-06-30 21410
2019-09-30 16686
2019-12-31 16271
2020-03-31 16544
2020-06-30 18117
2020-09-30 17017
2020-12-31 21655
2021-03-31 16622
2021-06-30 16679
2021-09-30 15729
2021-12-31 14346
2022-03-31 14826
2022-06-30 10596
2022-09-30 11143
2022-12-31 13230
2023-03-31 11794
2023-06-30 12772
2023-09-30 9835