Quarterly US dollars
1986-09-30 43187
1986-12-31 44797
1987-03-31 52065
1987-06-30 53028
1987-09-30 56474
1987-12-31 67955
1988-03-31 70610
1988-06-30 63870
1988-09-30 69775
1988-12-31 65971
1989-03-31 69890
1989-06-30 64376
1989-09-30 70170
1989-12-31 71351
1990-03-31 64963
1990-06-30 62136
1990-09-30 64382
1990-12-31 67001
1991-03-31 58734
1991-06-30 60894
1991-09-30 64967
1991-12-31 64429
1992-03-31 61395
1992-06-30 60420
1992-09-30 58756
1992-12-31 56044
1993-03-31 60828
1993-06-30 59400
1993-09-30 63348
1993-12-31 62978
1994-03-31 72693
1994-06-30 72121
1994-09-30 82082
1994-12-31 75615
1995-03-31 100737
1995-06-30 86918
1995-09-30 94039
1995-12-31 95581
1996-03-31 84847
1996-06-30 91932
1996-09-30 82941
1996-12-31 96695
1997-03-31 96004
1997-06-30 105315
1997-09-30 107066
1997-12-31 146590
1998-03-31 122342
1998-06-30 132629
1998-09-30 161649
1998-12-31 176958
1999-03-31 117375
1999-06-30 111598
1999-09-30 134584
1999-12-31 135246
2000-03-31 156874
2000-06-30 164078
2000-09-30 164282
2000-12-31 165399
2001-03-31 131912
2001-06-30 140757
2001-09-30 119495
2001-12-31 112428
2002-03-31 105575
2002-06-30 114882
2002-09-30 121929
2002-12-31 127641
2003-03-31 132096
2003-06-30 119210
2003-09-30 130598
2003-12-31 122668
2004-03-31 125047
2004-06-30 124599
2004-09-30 138079
2004-12-31 149712
2005-03-31 127215
2005-06-30 128307
2005-09-30 125852
2005-12-31 139531
2006-03-31 116829
2006-06-30 125756
2006-09-30 121643
2006-12-31 108586
2007-03-31 113798
2007-06-30 144464
2007-09-30 186176
2007-12-31 227002
2008-03-31 264641
2008-06-30 229109
2008-09-30 221327
2008-12-31 204330
2009-03-31 142435
2009-06-30 172459
2009-09-30 169439
2009-12-31 112022
2010-03-31 115201
2010-06-30 110704
2010-09-30 98186
2010-12-31 109377
2011-03-31 105265
2011-06-30 102273
2011-09-30 118118
2011-12-31 117027
2012-03-31 100943
2012-06-30 106428
2012-09-30 107117
2012-12-31 109603
2013-03-31 98182
2013-06-30 80411
2013-09-30 87571
2013-12-31 95052
2014-03-31 80810
2014-06-30 82949
2014-09-30 78025
2014-12-31 81649
2015-03-31 69301
2015-06-30 51943
2015-09-30 55221
2015-12-31 69086