Quarterly US dollars
1999-03-31 2519
1999-06-30 2410
1999-09-30 2477
1999-12-31 2362
2000-03-31 2580
2000-06-30 2381
2000-09-30 2430
2000-12-31 3427
2001-03-31 4160
2001-06-30 3961
2001-09-30 3815
2001-12-31 4157
2002-03-31 4694
2002-06-30 4638
2002-09-30 4237
2002-12-31 2659
2003-03-31 2715
2003-06-30 2356
2003-09-30 2462
2003-12-31 2865
2004-03-31 2667
2004-06-30 2706
2004-09-30 2881
2004-12-31 3198
2005-03-31 3100
2005-06-30 4327
2005-09-30 3454
2005-12-31 4503
2006-03-31 4314
2006-06-30 4292
2006-09-30 4819
2006-12-31 5686
2007-03-31 5391
2007-06-30 6117
2007-09-30 6803
2007-12-31 6076
2008-03-31 6041
2008-06-30 5400
2008-09-30 5082
2008-12-31 4627
2009-03-31 5239
2009-06-30 4447
2009-09-30 4369
2009-12-31 4525
2010-03-31 4771
2010-06-30 4750
2010-09-30 5188
2010-12-31 4246
2011-03-31 5250
2011-06-30 5492
2011-09-30 5576
2011-12-31 4796
2012-03-31 8096
2012-06-30 4934
2012-09-30 6151
2012-12-31 5801
2013-03-31 6792
2013-06-30 6292
2013-09-30 6366
2013-12-31 5834
2014-03-31 8432
2014-06-30 9388
2014-09-30 10298
2014-12-31 8567
2015-03-31 10701
2015-06-30 8358
2015-09-30 10454
2015-12-31 9036
2016-03-31 7925
2016-06-30 8903
2016-09-30 9295
2016-12-31 8421
2017-03-31 10403
2017-06-30 10307
2017-09-30 12501
2017-12-31 12097
2018-03-31 14649
2018-06-30 11543
2018-09-30 10523
2018-12-31 9284
2019-03-31 10884
2019-06-30 9328
2019-09-30 18253
2019-12-31 17150
2020-03-31 16724
2020-06-30 15717
2020-09-30 17873
2020-12-31 20077
2021-03-31 16590
2021-06-30 21200
2021-09-30 19076
2021-12-31 16737
2022-03-31 17192
2022-06-30 15958
2022-09-30 19501
2022-12-31 19625
2023-03-31 19760
2023-06-30 19568
2023-09-30 20681