Quarterly
1986-09-30 109307
1986-12-31 109573
1987-03-31 109703
1987-06-30 107985
1987-09-30 108083
1987-12-31 104801
1988-03-31 103713
1988-06-30 100467
1988-09-30 99364
1988-12-31 101821
1989-03-31 103269
1989-06-30 104148
1989-09-30 101621
1989-12-31 103119
1990-03-31 108789
1990-06-30 106625
1990-09-30 113349
1990-12-31 114191
1991-03-31 115311
1991-06-30 117770
1991-09-30 123820
1991-12-31 122243
1992-03-31 127377
1992-06-30 128514
1992-09-30 133854
1992-12-31 132276
1993-03-31 135444
1993-06-30 135786
1993-09-30 132571
1993-12-31 137753
1994-03-31 136695
1994-06-30 140180
1994-09-30 142913
1994-12-31 142411
1995-03-31 141228
1995-06-30 150213
1995-09-30 154899
1995-12-31 157925
1996-03-31 165605
1996-06-30 173397
1996-09-30 187716
1996-12-31 197050
1997-03-31 214354
1997-06-30 207680
1997-09-30 231241
1997-12-31 238525
1998-03-31 246362
1998-06-30 261609
1998-09-30 250119
1998-12-31 249225
1999-03-31 257800
1999-06-30 272389
1999-09-30 262865
1999-12-31 277755
2000-03-31 312282
2000-06-30 323795
2000-09-30 327795
2000-12-31 341729
2001-03-31 399926
2001-06-30 395238
2001-09-30 411699
2001-12-31 398658
2002-03-31 423117
2002-06-30 423264
2002-09-30 435955
2002-12-31 414443
2003-03-31 450040
2003-06-30 472562
2003-09-30 518639
2003-12-31 506453
2004-03-31 595848
2004-06-30 560120
2004-09-30 608161
2004-12-31 659835
2005-03-31 755595
2005-06-30 793888
2005-09-30 858248
2005-12-31 860428
2006-03-31 1000137
2006-06-30 1014851
2006-09-30 1100179
2006-12-31 1149058
2007-03-31 1308840
2007-06-30 1408602
2007-09-30 1434478
2007-12-31 1394891
2008-03-31 1354682
2008-06-30 1311547
2008-09-30 1327405
2008-12-31 1090569
2009-03-31 1058509
2009-06-30 1024024
2009-09-30 1053683
2009-12-31 1035732
2010-03-31 1090397
2010-06-30 1029219
2010-09-30 1094189
2010-12-31 1117141
2011-03-31 1161972
2011-06-30 1155754
2011-09-30 1040360
2011-12-31 1014328
2012-03-31 1032904
2012-06-30 1026887
2012-09-30 1037077
2012-12-31 1039656
2013-03-31 1044177
2013-06-30 1022740
2013-09-30 963404
2013-12-31 985480
2014-03-31 998623
2014-06-30 1014595
2014-09-30 1035248
2014-12-31 1018675
2015-03-31 1028720
2015-06-30 1002811
2015-09-30 1042893
2015-12-31 995377