Quarterly US dollars
1999-03-31 6693
1999-06-30 6562
1999-09-30 7121
1999-12-31 7007
2000-03-31 6627
2000-06-30 5762
2000-09-30 6387
2000-12-31 6167
2001-03-31 6363
2001-06-30 5952
2001-09-30 5456
2001-12-31 6025
2002-03-31 5839
2002-06-30 5687
2002-09-30 5647
2002-12-31 5490
2003-03-31 5173
2003-06-30 4919
2003-09-30 4927
2003-12-31 4557
2004-03-31 8345
2004-06-30 5220
2004-09-30 4096
2004-12-31 4993
2005-03-31 4564
2005-06-30 4175
2005-09-30 4169
2005-12-31 4278
2006-03-31 5401
2006-06-30 6122
2006-09-30 6300
2006-12-31 7317
2007-03-31 7051
2007-06-30 6728
2007-09-30 7305
2007-12-31 5998
2008-03-31 5801
2008-06-30 5996
2008-09-30 5835
2008-12-31 5115
2009-03-31 4532
2009-06-30 4020
2009-09-30 5211
2009-12-31 4632
2010-03-31 6078
2010-06-30 5213
2010-09-30 5769
2010-12-31 5783
2011-03-31 5654
2011-06-30 7025
2011-09-30 6895
2011-12-31 8121
2012-03-31 10948
2012-06-30 8218
2012-09-30 9307
2012-12-31 11073
2013-03-31 10761
2013-06-30 7997
2013-09-30 8856
2013-12-31 9119
2014-03-31 7194
2014-06-30 6817
2014-09-30 6494
2014-12-31 5650
2015-03-31 5744
2015-06-30 4590
2015-09-30 4395
2015-12-31 2986
2016-03-31 2640
2016-06-30 2254
2016-09-30 2555
2016-12-31 2636
2017-03-31 2650
2017-06-30 3230
2017-09-30 3755
2017-12-31 2683
2018-03-31 3344
2018-06-30 2210
2018-09-30 2593
2018-12-31 2930
2019-03-31 3062
2019-06-30 3438
2019-09-30 3015
2019-12-31 2988
2020-03-31 2798
2020-06-30 2607
2020-09-30 2180
2020-12-31 7139
2021-03-31 5118
2021-06-30 5067
2021-09-30 5033
2021-12-31 4810
2022-03-31 5150
2022-06-30 4645
2022-09-30 4515
2022-12-31 4535
2023-03-31 5366
2023-06-30 5783
2023-09-30 4083