Quarterly
1986-09-30 426431
1986-12-31 428151
1987-03-31 433390
1987-06-30 459338
1987-09-30 471870
1987-12-31 474075
1988-03-31 466985
1988-06-30 470079
1988-09-30 482447
1988-12-31 492585
1989-03-31 499542
1989-06-30 482688
1989-09-30 497789
1989-12-31 500003
1990-03-31 480002
1990-06-30 470543
1990-09-30 491258
1990-12-31 505041
1991-03-31 488400
1991-06-30 465990
1991-09-30 471434
1991-12-31 466461
1992-03-31 448457
1992-06-30 456294
1992-09-30 460489
1992-12-31 496891
1993-03-31 458889
1993-06-30 448348
1993-09-30 440487
1993-12-31 459605
1994-03-31 469019
1994-06-30 478024
1994-09-30 491318
1994-12-31 523448
1995-03-31 502859
1995-06-30 495674
1995-09-30 503405
1995-12-31 518584
1996-03-31 530274
1996-06-30 526508
1996-09-30 533131
1996-12-31 552731
1997-03-31 591487
1997-06-30 606211
1997-09-30 639219
1997-12-31 700118
1998-03-31 658166
1998-06-30 677672
1998-09-30 699448
1998-12-31 723239
1999-03-31 724500
1999-06-30 753433
1999-09-30 749027
1999-12-31 764546
2000-03-31 818051
2000-06-30 841051
2000-09-30 852745
2000-12-31 944010
2001-03-31 1020341
2001-06-30 982534
2001-09-30 1011766
2001-12-31 1062391
2002-03-31 1059125
2002-06-30 1061432
2002-09-30 1024959
2002-12-31 1088031
2003-03-31 1106211
2003-06-30 1184404
2003-09-30 1178756
2003-12-31 1269006
2004-03-31 1459065
2004-06-30 1428523
2004-09-30 1481314
2004-12-31 1581330
2005-03-31 1669746
2005-06-30 1709070
2005-09-30 1770415
2005-12-31 1790114
2006-03-31 2040314
2006-06-30 2050759
2006-09-30 2181328
2006-12-31 2213367
2007-03-31 2387403
2007-06-30 2437043
2007-09-30 2646857
2007-12-31 2714830
2008-03-31 2872627
2008-06-30 2547470
2008-09-30 2660037
2008-12-31 2301388
2009-03-31 2295415
2009-06-30 2224210
2009-09-30 2193777
2009-12-31 2211138
2010-03-31 2185097
2010-06-30 2126557
2010-09-30 2247612
2010-12-31 2285979
2011-03-31 2266140
2011-06-30 2228729
2011-09-30 2402640
2011-12-31 2382879
2012-03-31 2359187
2012-06-30 2090970
2012-09-30 2143531
2012-12-31 2113669
2013-03-31 2078165
2013-06-30 2049889
2013-09-30 1972677
2013-12-31 1959671
2014-03-31 1925524
2014-06-30 1936499
2014-09-30 1967377
2014-12-31 1942990
2015-03-31 1872509
2015-06-30 1845138
2015-09-30 1838491
2015-12-31 1797664