Year	% of total labor force
1991	41.36897019155724
1992	41.683951364922635
1993	41.99033161003856
1994	42.04681421948019
1995	42.004976680879615
1996	43.6208327110192
1997	43.68821969494723
1998	44.23052885061874
1999	44.33532390611275
2000	44.20318653853417
2001	44.80889621533314
2002	45.18602918834016
2003	45.192254894877536
2004	45.27517320427181
2005	45.615868037683
2006	45.641894577576444
2007	45.52351995713281
2008	46.08168616304401
2009	46.1904824658487
2010	45.77995989361624
2011	45.832046417225556
2012	45.96130466331154
2013	46.12574750594713
2014	46.39744707894719
2015	46.475426091817035
2016	46.53714762776355
2017	46.408060985796126
2018	46.5920536332543
2019	46.80712515736251
2020	46.69103036599969
2021	46.797591087021985
2022	46.7234260619944
2023	46.739453607090766