Quarterly US dollars
1997-09-30 26079
1997-12-31 33981
1998-03-31 33619
1998-06-30 31632
1998-09-30 33055
1998-12-31 36928
1999-03-31 40007
1999-06-30 39630
1999-09-30 42996
1999-12-31 41253
2000-03-31 41913
2000-06-30 38861
2000-09-30 39888
2000-12-31 42078
2001-03-31 40426
2001-06-30 39690
2001-09-30 40255
2001-12-31 39928
2002-03-31 37823
2002-06-30 34974
2002-09-30 36628
2002-12-31 36370
2003-03-31 34071
2003-06-30 33259
2003-09-30 33186
2003-12-31 32441
2004-03-31 37270
2004-06-30 34533
2004-09-30 36317
2004-12-31 38339
2005-03-31 37126
2005-06-30 45907
2005-09-30 47066
2005-12-31 52991
2006-03-31 57645
2006-06-30 65521
2006-09-30 58565
2006-12-31 60958
2007-03-31 68911
2007-06-30 66134
2007-09-30 82411
2007-12-31 80004
2008-03-31 93364
2008-06-30 95068
2008-09-30 95308
2008-12-31 87964
2009-03-31 89623
2009-06-30 92135
2009-09-30 91253
2009-12-31 87334
2010-03-31 82076
2010-06-30 81612
2010-09-30 92534
2010-12-31 90238
2011-03-31 90622
2011-06-30 91752
2011-09-30 87281
2011-12-31 79583
2012-03-31 84559
2012-06-30 83254
2012-09-30 82836
2012-12-31 79817
2013-03-31 75508
2013-06-30 61124
2013-09-30 61311
2013-12-31 61361
2014-03-31 61768
2014-06-30 59629
2014-09-30 59424
2014-12-31 57484
2015-03-31 49515
2015-06-30 47801
2015-09-30 42197
2015-12-31 39442
2016-03-31 38380
2016-06-30 41741
2016-09-30 42927
2016-12-31 42324
2017-03-31 42657
2017-06-30 53180
2017-09-30 53879
2017-12-31 58120
2018-03-31 58972
2018-06-30 57649
2018-09-30 59922
2018-12-31 54730
2019-03-31 54440
2019-06-30 58327
2019-09-30 59774
2019-12-31 64935
2020-03-31 65746
2020-06-30 57265
2020-09-30 54197
2020-12-31 53943
2021-03-31 51173
2021-06-30 54858
2021-09-30 54527
2021-12-31 55171
2022-03-31 55311
2022-06-30 59040
2022-09-30 62846
2022-12-31 43470
2023-03-31 36603
2023-06-30 50984
2023-09-30 51499