Quarterly US dollars
1999-03-31 1692
1999-06-30 1448
1999-09-30 1458
1999-12-31 1645
2000-03-31 1505
2000-06-30 1350
2000-09-30 1559
2000-12-31 1867
2001-03-31 2118
2001-06-30 2232
2001-09-30 2343
2001-12-31 2157
2002-03-31 2630
2002-06-30 2274
2002-09-30 2172
2002-12-31 2411
2003-03-31 2730
2003-06-30 2979
2003-09-30 2703
2003-12-31 3247
2004-03-31 3680
2004-06-30 3721
2004-09-30 3804
2004-12-31 3812
2005-03-31 3714
2005-06-30 3672
2005-09-30 4172
2005-12-31 5461
2006-03-31 6679
2006-06-30 5031
2006-09-30 8543
2006-12-31 7049
2007-03-31 7911
2007-06-30 6611
2007-09-30 9305
2007-12-31 7935
2008-03-31 6817
2008-06-30 11066
2008-09-30 8873
2008-12-31 7638
2009-03-31 10567
2009-06-30 8954
2009-09-30 9033
2009-12-31 8461
2010-03-31 9740
2010-06-30 8621
2010-09-30 9375
2010-12-31 9955
2011-03-31 13110
2011-06-30 11527
2011-09-30 9686
2011-12-31 8828
2012-03-31 11114
2012-06-30 9834
2012-09-30 12089
2012-12-31 11584
2013-03-31 12877
2013-06-30 11290
2013-09-30 11151
2013-12-31 10844
2014-03-31 11878
2014-06-30 11775
2014-09-30 13397
2014-12-31 13583
2015-03-31 16516
2015-06-30 16931
2015-09-30 14243
2015-12-31 14917
2016-03-31 13149
2016-06-30 15235
2016-09-30 16518
2016-12-31 14249
2017-03-31 16388
2017-06-30 17510
2017-09-30 14749
2017-12-31 13360
2018-03-31 15472
2018-06-30 13378
2018-09-30 14014
2018-12-31 11867
2019-03-31 18049
2019-06-30 18918
2019-09-30 15592
2019-12-31 15102
2020-03-31 15769
2020-06-30 13299
2020-09-30 14401
2020-12-31 13712
2021-03-31 14482
2021-06-30 14818
2021-09-30 12903
2021-12-31 11827
2022-03-31 10166
2022-06-30 9865
2022-09-30 10751
2022-12-31 10125
2023-03-31 11692
2023-06-30 11099
2023-09-30 10587