Year	% of total labor force (national estimate)
1991	6.537827364860364
1992	7.116613877697602
1993	7.65110184121497
1994	7.647386391778329
1995	7.189991930098862
1996	7.322780948115366
1997	7.184926061888914
1998	7.2410538338916774
1999	6.965680978614026
2000	6.384269667736407
2001	6.25921467441904
2002	6.632196293288919
2003	6.7202648999052075
2004	6.519479951896743
2005	6.2531544405213175
2006	5.911981922208461
2007	5.497742077598439
2008	5.834816371106781
2009	8.056868388740805
2010	8.352625010854332
2011	7.992853724020627
2012	8.052163735439404
2013	7.93380278523165
2014	7.407834271899146
2015	6.836362433222989
2016	6.408512114895513
2017	5.848078349501832
2018	5.307609118624587
2019	4.971084709904759
2020	6.757765704551869
2021	5.836757847133072
2022	4.542237061132709
2023	4.508158304413157