Year	% of total labor force
1991	23.370611931055645
1992	23.411710961018457
1993	23.478765517004145
1994	23.7799552139442
1995	23.773619368524514
1996	24.07835608065414
1997	24.155578869689304
1998	24.433481632065142
1999	24.590133576687442
2000	24.749351340013444
2001	25.032598129409788
2002	24.734017256743293
2003	24.985519535690383
2004	25.236868168781267
2005	25.477128468215593
2006	25.70178494623061
2007	25.92810762731514
2008	26.16001637911365
2009	26.02330181412855
2010	25.891265947555603
2011	25.671191200460214
2012	25.264352817896977
2013	25.67291938256523
2014	25.853546813247686
2015	25.718259487048066
2016	25.04304335464011
2017	24.635781473671827
2018	24.21837328069791
2019	23.78345803381331
2020	23.235887210638797
2021	22.870934353843158
2022	22.139090327407764
2023	22.499151335760878