Quarter	Thousands, Seasonally adjusted
1993-06-30	256835
1993-09-30	254516
1993-12-31	246900
1994-03-31	260282
1994-06-30	257529
1994-09-30	248468
1994-12-31	246184
1995-03-31	230739
1995-06-30	215564
1995-09-30	225284
1995-12-31	239369
1996-03-31	243795
1996-06-30	258374
1996-09-30	283312
1996-12-31	299900
1997-03-31	293451
1997-06-30	308755
1997-09-30	304414
1997-12-31	370400
1998-03-31	389595
1998-06-30	407423
1998-09-30	421604
1998-12-31	427781
1999-03-31	456807
1999-06-30	505145
1999-09-30	520044
1999-12-31	494660
2000-03-31	480437
2000-06-30	518308
2000-09-30	529172
2000-12-31	569863
2001-03-31	640595
2001-06-30	696938
2001-09-30	722887
2001-12-31	745282
2002-03-31	837565
2002-06-30	853699
2002-09-30	888439
2002-12-31	990215
2003-03-31	953502
2003-06-30	988626
2003-09-30	1072244
2003-12-31	1096069
2004-03-31	1010081
2004-06-30	967361
2004-09-30	882500
2004-12-31	766298
2005-03-31	782599
2005-06-30	815986
2005-09-30	879694
2005-12-31	911514
2006-03-31	873176
2006-06-30	859283
2006-09-30	884200
2006-12-31	921799
2007-03-31	887408
2007-06-30	864429
2007-09-30	830837
2007-12-31	694689
2008-03-31	686441
2008-06-30	543363
2008-09-30	422210
2008-12-31	334123
2009-03-31	307375
2009-06-30	328249
2009-09-30	329790
2009-12-31	327677
2010-03-31	298847
2010-06-30	305616
2010-09-30	298707
2010-12-31	291787
2011-03-31	304153
2011-06-30	292915
2011-09-30	316110
2011-12-31	312304
2012-03-31	305184
2012-06-30	285278
2012-09-30	272316
2012-12-31	288505
2013-03-31	284778
2013-06-30	310066
2013-09-30	334838
2013-12-31	355079
2014-03-31	354456
2014-06-30	319157
2014-09-30	321541
2014-12-31	305859
2015-03-31	310288
2015-06-30	348400
2015-09-30	372482
2015-12-31	371082
2016-03-31	379027
2016-06-30	373158
2016-09-30	356069
2016-12-31	384429
2017-03-31	379911
2017-06-30	373109
2017-09-30	385039
2017-12-31	388433
2018-03-31	374462
2018-06-30	384644
2018-09-30	388947
2018-12-31	385447
2019-03-31	383635
2019-06-30	385978
2019-09-30	387857
2019-12-31	392190
2020-03-31	387060
2020-06-30	186062
2020-09-30	379066
2020-12-31	454504
2021-03-31	409728
2021-06-30	393846
2021-09-30	371568
2021-12-31	387950
2022-03-31	409156
2022-06-30	373088
2022-09-30	387165
2022-12-31	280804
2023-03-31	244187
2023-06-30	284617
2023-09-30	244422
2023-12-31	249224