Quarterly US dollars
1999-03-31 10881
1999-06-30 10638
1999-09-30 11297
1999-12-31 11207
2000-03-31 11981
2000-06-30 12228
2000-09-30 13634
2000-12-31 13010
2001-03-31 12974
2001-06-30 11692
2001-09-30 12934
2001-12-31 13580
2002-03-31 14537
2002-06-30 14497
2002-09-30 15452
2002-12-31 16831
2003-03-31 15678
2003-06-30 15870
2003-09-30 18296
2003-12-31 18299
2004-03-31 21886
2004-06-30 24170
2004-09-30 23162
2004-12-31 27901
2005-03-31 27014
2005-06-30 26884
2005-09-30 29943
2005-12-31 36152
2006-03-31 40883
2006-06-30 39281
2006-09-30 41954
2006-12-31 47532
2007-03-31 55741
2007-06-30 66874
2007-09-30 73023
2007-12-31 76304
2008-03-31 80186
2008-06-30 83718
2008-09-30 73773
2008-12-31 64097
2009-03-31 60134
2009-06-30 59812
2009-09-30 60366
2009-12-31 58234
2010-03-31 56005
2010-06-30 51838
2010-09-30 56895
2010-12-31 53352
2011-03-31 54804
2011-06-30 55719
2011-09-30 49134
2011-12-31 50994
2012-03-31 48376
2012-06-30 53052
2012-09-30 55251
2012-12-31 59487
2013-03-31 65301
2013-06-30 57609
2013-09-30 57073
2013-12-31 56837
2014-03-31 49653
2014-06-30 52130
2014-09-30 47733
2014-12-31 42863
2015-03-31 36562
2015-06-30 36496
2015-09-30 35389
2015-12-31 33947
2016-03-31 35959
2016-06-30 35147
2016-09-30 34274
2016-12-31 30680
2017-03-31 31562
2017-06-30 31927
2017-09-30 31279
2017-12-31 31713
2018-03-31 32467
2018-06-30 30875
2018-09-30 30145
2018-12-31 29575
2019-03-31 27711
2019-06-30 27986
2019-09-30 28726
2019-12-31 27490
2020-03-31 26797
2020-06-30 26408
2020-09-30 28648
2020-12-31 28024
2021-03-31 24716
2021-06-30 22682
2021-09-30 23009
2021-12-31 22286
2022-03-31 20957
2022-06-30 19275
2022-09-30 19289
2022-12-31 19742
2023-03-31 20733
2023-06-30 21753
2023-09-30 19523