Year	% of total labor force
1991	42.13413028351191
1992	42.31975056328856
1993	42.440984023935066
1994	42.669450390963675
1995	42.82588432752715
1996	42.942939522925286
1997	43.095575857678874
1998	43.26878392394318
1999	43.564283733602615
2000	43.77804467991069
2001	43.86749731657391
2002	43.98995689489956
2003	44.20292843915971
2004	44.350022117963675
2005	44.50937193341249
2006	44.6812389022
2007	44.79476447652242
2008	44.91445232480772
2009	45.163597316910284
2010	45.30668093541986
2011	45.48735350121324
2012	45.66177783707991
2013	45.78242608110404
2014	45.8803762805858
2015	45.89082785786913
2016	45.96634799997218
2017	46.007390410290135
2018	46.03039165417891
2019	46.08967962182284
2020	46.05871431381312
2021	46.3208080774887
2022	46.434383728829346
2023	46.440359707553554