Year	% of total labor force
1991	17.770439403162786
1992	18.097556819928766
1993	17.97628032875708
1994	18.302529915975967
1995	18.22720356966263
1996	18.200470584673283
1997	18.249588573692247
1998	18.36103434780824
1999	18.856378052068326
2000	19.3039528214274
2001	19.654610206645536
2002	19.450099795504453
2003	19.811815619361063
2004	20.15208510179446
2005	20.516719809547318
2006	20.587801248881323
2007	20.91150531822328
2008	20.186260674991715
2009	20.54255916758341
2010	20.321641907050527
2011	20.055855601752555
2012	20.318583557156824
2013	20.15935834604669
2014	20.15736098030636
2015	20.72408975018273
2016	21.291231890990602
2017	21.113455903242897
2018	20.092277146587932
2019	19.27319770638328
2020	18.2622986709076
2021	18.31927336807269
2022	18.15168120604831
2023	18.48905428185945