Quarterly
1986-09-30 441420
1986-12-31 448795
1987-03-31 448819
1987-06-30 473285
1987-09-30 485376
1987-12-31 498355
1988-03-31 486510
1988-06-30 487820
1988-09-30 491214
1988-12-31 503832
1989-03-31 506844
1989-06-30 490846
1989-09-30 500600
1989-12-31 505354
1990-03-31 488236
1990-06-30 483678
1990-09-30 506608
1990-12-31 522983
1991-03-31 506365
1991-06-30 483172
1991-09-30 479237
1991-12-31 470694
1992-03-31 462585
1992-06-30 470389
1992-09-30 483645
1992-12-31 508356
1993-03-31 479640
1993-06-30 488557
1993-09-30 477750
1993-12-31 498065
1994-03-31 512405
1994-06-30 532174
1994-09-30 553162
1994-12-31 565462
1995-03-31 554567
1995-06-30 551185
1995-09-30 564110
1995-12-31 572059
1996-03-31 580777
1996-06-30 574299
1996-09-30 578230
1996-12-31 598930
1997-03-31 627666
1997-06-30 629124
1997-09-30 671968
1997-12-31 727643
1998-03-31 707155
1998-06-30 722425
1998-09-30 747729
1998-12-31 745561
1999-03-31 731524
1999-06-30 739875
1999-09-30 729870
1999-12-31 717938
2000-03-31 763857
2000-06-30 796312
2000-09-30 804903
2000-12-31 852493
2001-03-31 924204
2001-06-30 900061
2001-09-30 917588
2001-12-31 959613
2002-03-31 938276
2002-06-30 919027
2002-09-30 935885
2002-12-31 969736
2003-03-31 978834
2003-06-30 1037244
2003-09-30 1035340
2003-12-31 1081079
2004-03-31 1235552
2004-06-30 1220997
2004-09-30 1274326
2004-12-31 1343977
2005-03-31 1450807
2005-06-30 1524213
2005-09-30 1570745
2005-12-31 1595060
2006-03-31 1789549
2006-06-30 1801163
2006-09-30 1941001
2006-12-31 1948121
2007-03-31 2138297
2007-06-30 2243177
2007-09-30 2400760
2007-12-31 2402635
2008-03-31 2545361
2008-06-30 2334739
2008-09-30 2407604
2008-12-31 2142631
2009-03-31 2142883
2009-06-30 1993633
2009-09-30 2029727
2009-12-31 2053373
2010-03-31 2073544
2010-06-30 1983839
2010-09-30 2114479
2010-12-31 2080726
2011-03-31 2213794
2011-06-30 2225277
2011-09-30 2348617
2011-12-31 2264515
2012-03-31 2259200
2012-06-30 2078374
2012-09-30 2084860
2012-12-31 2076139
2013-03-31 2058301
2013-06-30 2078809
2013-09-30 2023412
2013-12-31 2021742
2014-03-31 2076660
2014-06-30 2149506
2014-09-30 2188199
2014-12-31 2159062
2015-03-31 2085863
2015-06-30 2028688
2015-09-30 2030364
2015-12-31 2013366