Quarterly
1986-09-30 34736
1986-12-31 35922
1987-03-31 37330
1987-06-30 41909
1987-09-30 44359
1987-12-31 43872
1988-03-31 37079
1988-06-30 36612
1988-09-30 35928
1988-12-31 38318
1989-03-31 38679
1989-06-30 42415
1989-09-30 44028
1989-12-31 43100
1990-03-31 38360
1990-06-30 37932
1990-09-30 39841
1990-12-31 39781
1991-03-31 37543
1991-06-30 44023
1991-09-30 45736
1991-12-31 46126
1992-03-31 47278
1992-06-30 50002
1992-09-30 45840
1992-12-31 51205
1993-03-31 45161
1993-06-30 47145
1993-09-30 47457
1993-12-31 54571
1994-03-31 62723
1994-06-30 62670
1994-09-30 68582
1994-12-31 68094
1995-03-31 69729
1995-06-30 64740
1995-09-30 61721
1995-12-31 61193
1996-03-31 69582
1996-06-30 66002
1996-09-30 65018
1996-12-31 67789
1997-03-31 80779
1997-06-30 76841
1997-09-30 65950
1997-12-31 59679
1998-03-31 68463
1998-06-30 67389
1998-09-30 63809
1998-12-31 62787
1999-03-31 49984
1999-06-30 59065
1999-09-30 60747
1999-12-31 67114
2000-03-31 62107
2000-06-30 69727
2000-09-30 69202
2000-12-31 71021
2001-03-31 81192
2001-06-30 79846
2001-09-30 86067
2001-12-31 77344
2002-03-31 74572
2002-06-30 71008
2002-09-30 65134
2002-12-31 77289
2003-03-31 82660
2003-06-30 76418
2003-09-30 92893
2003-12-31 101564
2004-03-31 109450
2004-06-30 127387
2004-09-30 135452
2004-12-31 133514
2005-03-31 152991
2005-06-30 145140
2005-09-30 169746
2005-12-31 178105
2006-03-31 184511
2006-06-30 183874
2006-09-30 197885
2006-12-31 190160
2007-03-31 218584
2007-06-30 210201
2007-09-30 248413
2007-12-31 262499
2008-03-31 245382
2008-06-30 197750
2008-09-30 238400
2008-12-31 150786
2009-03-31 113110
2009-06-30 110310
2009-09-30 118353
2009-12-31 114766
2010-03-31 120031
2010-06-30 113566
2010-09-30 101450
2010-12-31 106020
2011-03-31 110426
2011-06-30 123942
2011-09-30 119474
2011-12-31 135742
2012-03-31 147068
2012-06-30 144367
2012-09-30 122662
2012-12-31 124583
2013-03-31 134467
2013-06-30 128332
2013-09-30 140103
2013-12-31 156750
2014-03-31 157431
2014-06-30 160788
2014-09-30 159665
2014-12-31 149428
2015-03-31 131586
2015-06-30 133567
2015-09-30 157404
2015-12-31 146771