Year	% of total labor force
1991	39.79494745209436
1992	40.445142821719166
1993	41.07166949242937
1994	41.202712699069416
1995	41.41504598020098
1996	41.53000227807008
1997	41.886064524641455
1998	42.27246899023812
1999	42.89759580599094
2000	43.04870910953748
2001	42.42142119481538
2002	42.87417099900276
2003	43.10862803123193
2004	43.81893777284473
2005	44.15558114146238
2006	44.41907694386872
2007	44.69517285831379
2008	44.96479535843385
2009	45.15563515732989
2010	45.360511079484795
2011	45.42089247413252
2012	45.413735133277186
2013	45.75804355054866
2014	46.065316094274145
2015	46.127953820719384
2016	46.03485921179256
2017	46.2910979035965
2018	46.701073936036614
2019	46.77515519101803
2020	46.74896674941961
2021	46.80343758175303
2022	46.986334786110866
2023	46.85001326397407