Year	% of total labor force
1991	24.645536005466433
1992	24.802507224413795
1993	25.004352958810166
1994	25.230265313805557
1995	25.472383741197795
1996	25.533897726185977
1997	25.602637760935526
1998	25.698090912963593
1999	25.846427285655675
2000	26.071129256972807
2001	26.173162400937542
2002	26.33698113177131
2003	26.577813939017197
2004	26.89177074774675
2005	27.301820162325303
2006	27.984609162947226
2007	28.628986768040022
2008	29.243940032562254
2009	29.88395019859238
2010	30.59974495855252
2011	31.366686801600665
2012	32.35821547722837
2013	33.50528749589526
2014	34.65749824624875
2015	35.676595023331906
2016	36.63736039419089
2017	37.339730528154504
2018	37.84344354181402
2019	38.154106647016505
2020	37.97740232113456
2021	38.02285174777718
2022	37.578378957217076
2023	37.74781173759917