Year	% of total labor force
1991	41.70638509792104
1992	42.25370509152523
1993	43.052735627270785
1994	45.00313790445296
1995	47.40579857800507
1996	47.245538123152066
1997	46.969237571852695
1998	46.63598843619782
1999	46.3683457926979
2000	46.22579843135692
2001	46.40792361273493
2002	46.61020887786416
2003	46.783104526022626
2004	46.91116920328833
2005	47.00421101390354
2006	47.046015418146695
2007	47.059012082574796
2008	47.04772641535542
2009	47.03928720896188
2010	47.05696560372656
2011	47.06438191909283
2012	47.10840796837958
2013	47.16432522717601
2014	47.21718780417278
2015	47.25301215844925
2016	47.33189112286598
2017	47.37337643149075
2018	46.89584958502033
2019	46.33245631289871
2020	47.15127544140044
2021	47.05449248499215
2022	47.29123865671507
2023	47.28959346078672