Year	% of total labor force (national estimate)
1992	6.587222483427345
1993	6.442744752979703
1995	8.335928574714698
1996	8.662357488127363
1997	8.326110536496365
1998	8.952526166048878
1999	9.64469444669725
2001	8.932133613170286
2002	9.31779824521875
2003	8.895286180624684
2004	8.328502888058393
2005	8.112290225825275
2006	7.032233969406706
2007	7.308865108872713
2008	6.681681938840616
2009	7.7245772535845205
2011	6.526334000269334
2012	6.37320291165626
2013	6.164370458164662
2014	5.955399702365786
2015	6.515961053775299
2016	7.770468044234077
2017	8.128666967171805
2018	7.984806389887081
2019	8.184041115869112
2020	10.585839557523984
2021	9.309549470110047
2022	6.895992559414538
2023	6.280127353623663