Quarter	Thousands
1987-03-31	299271
1987-06-30	387511
1987-09-30	395772
1987-12-31	349560
1988-03-31	390591
1988-06-30	489346
1988-09-30	413704
1988-12-31	300444
1989-03-31	254190
1989-06-30	314236
1989-09-30	310877
1989-12-31	281325
1990-03-31	283776
1990-06-30	267189
1990-09-30	259842
1990-12-31	251566
1991-03-31	252933
1991-06-30	312653
1991-09-30	261610
1991-12-31	232314
1992-03-31	227734
1992-06-30	259393
1992-09-30	231588
1992-12-31	176789
1993-03-31	218981
1993-06-30	283319.7
1993-09-30	260254.6
1993-12-31	230331.6
1994-03-31	244263.7
1994-06-30	283153.3
1994-09-30	255058.8
1994-12-31	231297.9
1995-03-31	214951.9
1995-06-30	236173.7
1995-09-30	232386.3
1995-12-31	225872.7
1996-03-31	225673.3
1996-06-30	282719.8
1996-09-30	293827.5
1996-12-31	282405.6
1997-03-31	258218.7
1997-06-30	355034.7
1997-09-30	317268.2
1997-12-31	341276.3
1998-03-31	358988.8
1998-06-30	451284.3
1998-09-30	443672.1
1998-12-31	394100.1
1999-03-31	434762.4
1999-06-30	558306.6
1999-09-30	544133
1999-12-31	454843.1
2000-03-31	463405.6
2000-06-30	573877.5
2000-09-30	544882.1
2000-12-31	513737
2001-03-31	612431
2001-06-30	764333.8
2001-09-30	743719.9
2001-12-31	689036.2
2002-03-31	765147.1
2002-06-30	944149.4
2002-09-30	931727.2
2002-12-31	924890.8
2003-03-31	904332.4
2003-06-30	1062182.1
2003-09-30	1110636.4
2003-12-31	1027671.3
2004-03-31	976352.5
2004-06-30	1040790
2004-09-30	913963.9
2004-12-31	717813.5
2005-03-31	730185.3
2005-06-30	896535.4
2005-09-30	911232.5
2005-12-31	842868.9
2006-03-31	841060.3
2006-06-30	927028
2006-09-30	907365.1
2006-12-31	858324.5
2007-03-31	850996
2007-06-30	927107.7
2007-09-30	853688
2007-12-31	659673.1
2008-03-31	645409
2008-06-30	585747
2008-09-30	437872.1
2008-12-31	321379.6
2009-03-31	294413.8
2009-06-30	351088.2
2009-09-30	347334.2
2009-12-31	306589.1
2010-03-31	284515.7
2010-06-30	326778.7
2010-09-30	312789.4
2010-12-31	278940.2
2011-03-31	289190.9
2011-06-30	312583.4
2011-09-30	330200.5
2011-12-31	295451.8
2012-03-31	288404.9
2012-06-30	300984.2
2012-09-30	282312.5
2012-12-31	278852.9
2013-03-31	257806.3
2013-06-30	336420.9
2013-09-30	348998.1
2013-12-31	343486.9
2014-03-31	326304.2
2014-06-30	337999.3
2014-09-30	337376
2014-12-31	295482.3
2015-03-31	290412
2015-06-30	367101.6
2015-09-30	389901.8
2015-12-31	357654.7
2016-03-31	352060
2016-06-30	399761.4
2016-09-30	372766.7
2016-12-31	366493.5
2017-03-31	363430.3
2017-06-30	390827.2
2017-09-30	397577.6
2017-12-31	374332.5
2018-03-31	348111.1
2018-06-30	409501
2018-09-30	402335.3
2018-12-31	375263.3
2019-03-31	362268.8
2019-06-30	400930.6
2019-09-30	407064
2019-12-31	379220.5
2020-03-31	368576.4
2020-06-30	192552
2020-09-30	397403.1
2020-12-31	429416.9
2021-03-31	386091.6
2021-06-30	414028.7
2021-09-30	391254.6
2021-12-31	370418.9
2022-03-31	389539.7
2022-06-30	386528.2
2022-09-30	408144.5
2022-12-31	271415.2
2023-03-31	239803.8
2023-06-30	296877.9
2023-09-30	254192.9
2023-12-31	233916.6