Chart 8. Extreme-value-adjusted irregulars, standardized by dividing by the estimated standard error of composited self-employment, January 2000–December 2022
Date	Extreme-value-adjusted irregulars, standardized
Jan 2000	0.75
Feb 2000	-1.00
Mar 2000	-2.13
Apr 2000	0.70
May 2000	0.06
Jun 2000	0.59
Jul 2000	-0.24
Aug 2000	-0.53
Sep 2000	0.19
Oct 2000	0.41
Nov 2000	0.00
Dec 2000	-0.73
Jan 2001	-0.42
Feb 2001	0.77
Mar 2001	0.94
Apr 2001	-1.19
May 2001	0.06
Jun 2001	0.00
Jul 2001	-0.49
Aug 2001	0.32
Sep 2001	0.00
Oct 2001	0.61
Nov 2001	-0.48
Dec 2001	0.78
Jan 2002	-0.06
Feb 2002	-0.48
Mar 2002	-0.67
Apr 2002	0.20
May 2002	0.11
Jun 2002	0.11
Jul 2002	0.53
Aug 2002	-0.17
Sep 2002	-0.03
Oct 2002	-0.71
Nov 2002	0.78
Dec 2002	-0.70
Jan 2003	-0.09
Feb 2003	0.61
Mar 2003	1.77
Apr 2003	-0.04
May 2003	-0.01
Jun 2003	-0.51
Jul 2003	-0.38
Aug 2003	-0.15
Sep 2003	0.69
Oct 2003	-0.29
Nov 2003	0.37
Dec 2003	-0.11
Jan 2004	0.33
Feb 2004	0.34
Mar 2004	-0.57
Apr 2004	-0.46
May 2004	0.03
Jun 2004	-0.26
Jul 2004	0.48
Aug 2004	0.75
Sep 2004	-0.99
Oct 2004	0.47
Nov 2004	-1.61
Dec 2004	0.53
Jan 2005	-0.03
Feb 2005	-0.34
Mar 2005	0.76
Apr 2005	0.18
May 2005	0.00
Jun 2005	-0.60
Jul 2005	0.00
Aug 2005	-1.53
Sep 2005	-0.06
Oct 2005	0.52
Nov 2005	-0.39
Dec 2005	-0.18
Jan 2006	0.00
Feb 2006	0.14
Mar 2006	0.12
Apr 2006	0.00
May 2006	-0.21
Jun 2006	0.79
Jul 2006	-0.42
Aug 2006	-0.13
Sep 2006	-0.32
Oct 2006	-0.30
Nov 2006	0.84
Dec 2006	0.47
Jan 2007	-0.20
Feb 2007	-0.49
Mar 2007	-0.54
Apr 2007	-0.02
May 2007	0.28
Jun 2007	0.65
Jul 2007	0.04
Aug 2007	-1.02
Sep 2007	0.69
Oct 2007	-0.23
Nov 2007	0.38
Dec 2007	-0.02
Jan 2008	-0.39
Feb 2008	0.00
Mar 2008	0.00
Apr 2008	0.34
May 2008	-0.58
Jun 2008	-0.44
Jul 2008	0.56
Aug 2008	1.10
Sep 2008	0.24
Oct 2008	-0.21
Nov 2008	-0.53
Dec 2008	-0.72
Jan 2009	-0.15
Feb 2009	0.90
Mar 2009	-0.48
Apr 2009	0.70
May 2009	-0.58
Jun 2009	0.20
Jul 2009	-0.01
Aug 2009	0.42
Sep 2009	-0.48
Oct 2009	0.00
Nov 2009	-0.61
Dec 2009	0.66
Jan 2010	-0.01
Feb 2010	-0.48
Mar 2010	0.04
Apr 2010	-0.36
May 2010	0.48
Jun 2010	0.47
Jul 2010	0.09
Aug 2010	-2.00
Sep 2010	0.05
Oct 2010	-0.10
Nov 2010	0.18
Dec 2010	-1.99
Jan 2011	0.55
Feb 2011	-0.40
Mar 2011	1.59
Apr 2011	-0.64
May 2011	0.63
Jun 2011	-0.16
Jul 2011	0.25
Aug 2011	0.00
Sep 2011	-0.76
Oct 2011	-0.15
Nov 2011	-0.32
Dec 2011	0.46
Jan 2012	0.74
Feb 2012	-0.26
Mar 2012	0.17
Apr 2012	0.15
May 2012	-0.08
Jun 2012	-0.87
Jul 2012	-0.58
Aug 2012	0.34
Sep 2012	0.90
Oct 2012	0.09
Nov 2012	-0.11
Dec 2012	0.16
Jan 2013	-1.37
Feb 2013	1.61
Mar 2013	-0.27
Apr 2013	0.45
May 2013	-0.85
Jun 2013	0.38
Jul 2013	0.02
Aug 2013	0.14
Sep 2013	0.55
Oct 2013	-0.80
Nov 2013	0.39
Dec 2013	-0.32
Jan 2014	-0.24
Feb 2014	0.07
Mar 2014	0.42
Apr 2014	0.33
May 2014	-0.10
Jun 2014	0.06
Jul 2014	-1.08
Aug 2014	-0.46
Sep 2014	0.68
Oct 2014	0.92
Nov 2014	0.05
Dec 2014	-1.63
Jan 2015	0.94
Feb 2015	-1.56
Mar 2015	0.02
Apr 2015	-0.11
May 2015	0.84
Jun 2015	-1.76
Jul 2015	1.49
Aug 2015	0.13
Sep 2015	-0.78
Oct 2015	-0.54
Nov 2015	0.40
Dec 2015	0.50
Jan 2016	0.25
Feb 2016	0.25
Mar 2016	-1.17
Apr 2016	-0.83
May 2016	0.65
Jun 2016	1.42
Jul 2016	0.03
Aug 2016	0.94
Sep 2016	-1.09
Oct 2016	-0.83
Nov 2016	0.04
Dec 2016	0.85
Jan 2017	-1.15
Feb 2017	1.46
Mar 2017	0.16
Apr 2017	0.04
May 2017	-0.34
Jun 2017	0.50
Jul 2017	-0.37
Aug 2017	-0.74
Sep 2017	-0.13
Oct 2017	1.34
Nov 2017	0.60
Dec 2017	-0.94
Jan 2018	-0.09
Feb 2018	-0.87
Mar 2018	0.87
Apr 2018	0.56
May 2018	0.67
Jun 2018	-0.85
Jul 2018	-0.35
Aug 2018	-0.79
Sep 2018	0.57
Oct 2018	0.58
Nov 2018	-0.62
Dec 2018	0.32
Jan 2019	-0.27
Feb 2019	0.79
Mar 2019	0.09
Apr 2019	-0.13
May 2019	-0.71
Jun 2019	-0.91
Jul 2019	1.06
Aug 2019	0.07
Sep 2019	0.14
Oct 2019	0.14
Nov 2019	-0.13
Dec 2019	-0.69
Jan 2020	1.67
Feb 2020	0.37
Mar 2020	0.00
Apr 2020	0.41
May 2020	-1.60
Jun 2020	0.95
Jul 2020	-0.66
Aug 2020	0.00
Sep 2020	0.72
Oct 2020	-0.84
Nov 2020	-0.34
Dec 2020	0.75
Jan 2021	0.38
Feb 2021	-1.05
Mar 2021	-0.02
Apr 2021	-1.28
May 2021	0.95
Jun 2021	-0.47
Jul 2021	1.47
Aug 2021	0.52
Sep 2021	-0.85
Oct 2021	-0.14
Nov 2021	0.70
Dec 2021	-0.01
Jan 2022	-0.70
Feb 2022	0.15
Mar 2022	0.27
Apr 2022	-0.04
May 2022	-0.39
Jun 2022	0.81
Jul 2022	-0.23
Aug 2022	-0.83
Sep 2022	1.36
Oct 2022	0.89
Nov 2022	-1.55
Dec 2022	-0.23
Source: U.S. Bureau of Labor Statistics.