Year	% of total labor force
1991	38.37301887537913
1992	38.403556225405886
1993	38.39487530846877
1994	38.493516638051084
1995	38.50083950079767
1996	38.49506277015066
1997	38.4846605714686
1998	38.5223177957024
1999	38.515688160853806
2000	38.50538367216023
2001	38.49716432088314
2002	38.48383390883886
2003	38.517255741622144
2004	38.507071141545715
2005	38.56332967238138
2006	38.48019108898972
2007	38.47666105563174
2008	38.35570210644985
2009	38.30372341236233
2010	38.17349605963448
2011	38.11694352551932
2012	38.084917684060194
2013	38.100345026034965
2014	38.13166440856777
2015	38.22451490797018
2016	38.29002618028008
2017	38.35824715596947
2018	38.365814905717116
2019	38.44442261742794
2020	38.24668276671135
2021	38.51550657925795
2022	38.38870415045077
2023	38.82395227275444