Quarterly US dollars
1999-03-31 3336
1999-06-30 2849
1999-09-30 2764
1999-12-31 2987
2000-03-31 3189
2000-06-30 3425
2000-09-30 4268
2000-12-31 5214
2001-03-31 4345
2001-06-30 3663
2001-09-30 3074
2001-12-31 1989
2002-03-31 1738
2002-06-30 1956
2002-09-30 1527
2002-12-31 1618
2003-03-31 1948
2003-06-30 1626
2003-09-30 2260
2003-12-31 3251
2004-03-31 3189
2004-06-30 4188
2004-09-30 4172
2004-12-31 4372
2005-03-31 5758
2005-06-30 6672
2005-09-30 7056
2005-12-31 9081
2006-03-31 10169
2006-06-30 8521
2006-09-30 9160
2006-12-31 9078
2007-03-31 8703
2007-06-30 8060
2007-09-30 8467
2007-12-31 8222
2008-03-31 10097
2008-06-30 8609
2008-09-30 9641
2008-12-31 9435
2009-03-31 8057
2009-06-30 8484
2009-09-30 8144
2009-12-31 8679
2010-03-31 9338
2010-06-30 10689
2010-09-30 10424
2010-12-31 13567
2011-03-31 19898
2011-06-30 21859
2011-09-30 15625
2011-12-31 15268
2012-03-31 15379
2012-06-30 17865
2012-09-30 17715
2012-12-31 20334
2013-03-31 22358
2013-06-30 27113
2013-09-30 27084
2013-12-31 28878
2014-03-31 26998
2014-06-30 29487
2014-09-30 30040
2014-12-31 29166
2015-03-31 27796
2015-06-30 28223
2015-09-30 27883
2015-12-31 27480
2016-03-31 28558
2016-06-30 27193
2016-09-30 26487
2016-12-31 21856
2017-03-31 21539
2017-06-30 20813
2017-09-30 22597
2017-12-31 23949
2018-03-31 24164
2018-06-30 25204
2018-09-30 20670
2018-12-31 18243
2019-03-31 19664
2019-06-30 16807
2019-09-30 15368
2019-12-31 14611
2020-03-31 11751
2020-06-30 11805
2020-09-30 13752
2020-12-31 14955
2021-03-31 16428
2021-06-30 15810
2021-09-30 14763
2021-12-31 15068
2022-03-31 14643
2022-06-30 15195
2022-09-30 14470
2022-12-31 15031
2023-03-31 14916
2023-06-30 15206
2023-09-30 14899