Quarterly US dollars
1999-03-31 8400
1999-06-30 12695
1999-09-30 13729
1999-12-31 14508
2000-03-31 17059
2000-06-30 12882
2000-09-30 12923
2000-12-31 16759
2001-03-31 14489
2001-06-30 12493
2001-09-30 15756
2001-12-31 17678
2002-03-31 19314
2002-06-30 19383
2002-09-30 19605
2002-12-31 21661
2003-03-31 21066
2003-06-30 29096
2003-09-30 27059
2003-12-31 27661
2004-03-31 32055
2004-06-30 32353
2004-09-30 28211
2004-12-31 27862
2005-03-31 25683
2005-06-30 26751
2005-09-30 25411
2005-12-31 25804
2006-03-31 30881
2006-06-30 31116
2006-09-30 34027
2006-12-31 34493
2007-03-31 35332
2007-06-30 38182
2007-09-30 43262
2007-12-31 45890
2008-03-31 52766
2008-06-30 56883
2008-09-30 59830
2008-12-31 48687
2009-03-31 55800
2009-06-30 58838
2009-09-30 60073
2009-12-31 60987
2010-03-31 46012
2010-06-30 54072
2010-09-30 46081
2010-12-31 50456
2011-03-31 52383
2011-06-30 58898
2011-09-30 69868
2011-12-31 54328
2012-03-31 62063
2012-06-30 59689
2012-09-30 61880
2012-12-31 62844
2013-03-31 55517
2013-06-30 51919
2013-09-30 53695
2013-12-31 65393
2014-03-31 59380
2014-06-30 60907
2014-09-30 61264
2014-12-31 60344
2015-03-31 50185
2015-06-30 48908
2015-09-30 51759
2015-12-31 47653
2016-03-31 42614
2016-06-30 44927
2016-09-30 44037
2016-12-31 49276
2017-03-31 39297
2017-06-30 34417
2017-09-30 29714
2017-12-31 30663
2018-03-31 32768
2018-06-30 30635
2018-09-30 30357
2018-12-31 38082
2019-03-31 29493
2019-06-30 33796
2019-09-30 32545
2019-12-31 34489
2020-03-31 44110
2020-06-30 35655
2020-09-30 38665
2020-12-31 54261
2021-03-31 36946
2021-06-30 41147
2021-09-30 40103
2021-12-31 52333
2022-03-31 49916
2022-06-30 46719
2022-09-30 45074
2022-12-31 44926
2023-03-31 46151
2023-06-30 36250
2023-09-30 37856