Quarterly US dollars
1999-03-31 4616
1999-06-30 4803
1999-09-30 4684
1999-12-31 5066
2000-03-31 5306
2000-06-30 5296
2000-09-30 5439
2000-12-31 5984
2001-03-31 6175
2001-06-30 5714
2001-09-30 6015
2001-12-31 6167
2002-03-31 5742
2002-06-30 6862
2002-09-30 7505
2002-12-31 8613
2003-03-31 8336
2003-06-30 10808
2003-09-30 10382
2003-12-31 11454
2004-03-31 13023
2004-06-30 14333
2004-09-30 15094
2004-12-31 17389
2005-03-31 18877
2005-06-30 17189
2005-09-30 18663
2005-12-31 17996
2006-03-31 22411
2006-06-30 21956
2006-09-30 25157
2006-12-31 25109
2007-03-31 27962
2007-06-30 28570
2007-09-30 28107
2007-12-31 26247
2008-03-31 28774
2008-06-30 28430
2008-09-30 33752
2008-12-31 27043
2009-03-31 22298
2009-06-30 22511
2009-09-30 36247
2009-12-31 24083
2010-03-31 23052
2010-06-30 20576
2010-09-30 21633
2010-12-31 22267
2011-03-31 23951
2011-06-30 23263
2011-09-30 24242
2011-12-31 22370
2012-03-31 25078
2012-06-30 24854
2012-09-30 24363
2012-12-31 22363
2013-03-31 22453
2013-06-30 22582
2013-09-30 24836
2013-12-31 25263
2014-03-31 23689
2014-06-30 25354
2014-09-30 23417
2014-12-31 21766
2015-03-31 21392
2015-06-30 22456
2015-09-30 23898
2015-12-31 24124
2016-03-31 24273
2016-06-30 24941
2016-09-30 22965
2016-12-31 20372
2017-03-31 20184
2017-06-30 21009
2017-09-30 21581
2017-12-31 24013
2018-03-31 25074
2018-06-30 23794
2018-09-30 23458
2018-12-31 23271
2019-03-31 22464
2019-06-30 22208
2019-09-30 23060
2019-12-31 23726
2020-03-31 23669
2020-06-30 20983
2020-09-30 21485
2020-12-31 22931
2021-03-31 22004
2021-06-30 24138
2021-09-30 23741
2021-12-31 22142
2022-03-31 19545
2022-06-30 16659
2022-09-30 15485
2022-12-31 16886
2023-03-31 15373
2023-06-30 15388
2023-09-30 14389