Quarterly US dollars
1986-09-30 46792
1986-12-31 47802
1987-03-31 54832
1987-06-30 57188
1987-09-30 65381
1987-12-31 79383
1988-03-31 79052
1988-06-30 75432
1988-09-30 89040
1988-12-31 83318
1989-03-31 84215
1989-06-30 79148
1989-09-30 83964
1989-12-31 87182
1990-03-31 86296
1990-06-30 86344
1990-09-30 108555
1990-12-31 110118
1991-03-31 94549
1991-06-30 90755
1991-09-30 94438
1991-12-31 90713
1992-03-31 81943
1992-06-30 73870
1992-09-30 72564
1992-12-31 59036
1993-03-31 59810
1993-06-30 54666
1993-09-30 58914
1993-12-31 53703
1994-03-31 60084
1994-06-30 60387
1994-09-30 66979
1994-12-31 66453
1995-03-31 77912
1995-06-30 70517
1995-09-30 79454
1995-12-31 84786
1996-03-31 76505
1996-06-30 81810
1996-09-30 83203
1996-12-31 90216
1997-03-31 93260
1997-06-30 109131
1997-09-30 99848
1997-12-31 120488
1998-03-31 97681
1998-06-30 97696
1998-09-30 106321
1998-12-31 147007
1999-03-31 110478
1999-06-30 86498
1999-09-30 108363
1999-12-31 122537
2000-03-31 123606
2000-06-30 129766
2000-09-30 127497
2000-12-31 146514
2001-03-31 101564
2001-06-30 97111
2001-09-30 96590
2001-12-31 82184
2002-03-31 75114
2002-06-30 88482
2002-09-30 82726
2002-12-31 102686
2003-03-31 78195
2003-06-30 88840
2003-09-30 74072
2003-12-31 93605
2004-03-31 97715
2004-06-30 101033
2004-09-30 91508
2004-12-31 108578
2005-03-31 83194
2005-06-30 88833
2005-09-30 81363
2005-12-31 70577
2006-03-31 60651
2006-06-30 59722
2006-09-30 63771
2006-12-31 47828
2007-03-31 59408
2007-06-30 55687
2007-09-30 58472
2007-12-31 86074
2008-03-31 101548
2008-06-30 91657
2008-09-30 90227
2008-12-31 100702
2009-03-31 82750
2009-06-30 102863
2009-09-30 127792
2009-12-31 90087
2010-03-31 101408
2010-06-30 113045
2010-09-30 130409
2010-12-31 136860
2011-03-31 114827
2011-06-30 103225
2011-09-30 132633
2011-12-31 114562
2012-03-31 113298
2012-06-30 125034
2012-09-30 114347
2012-12-31 98759
2013-03-31 101447
2013-06-30 80989
2013-09-30 94730
2013-12-31 75413
2014-03-31 72934
2014-06-30 89385
2014-09-30 85374
2014-12-31 84754
2015-03-31 68709
2015-06-30 74579
2015-09-30 69062
2015-12-31 79518