Year	% of total labor force
1991	43.93367408853363
1992	44.22736096243548
1993	44.693100966745355
1994	44.958208239980394
1995	45.23539486123535
1996	45.34034706508493
1997	45.31360558720627
1998	45.61386632549498
1999	45.7019157490868
2000	45.9115714494076
2001	45.89665070948294
2002	45.920943770756224
2003	46.50421579869153
2004	46.471064658044256
2005	46.93730070840144
2006	47.06209848691942
2007	47.31460178241565
2008	47.42269047262706
2009	47.59493569757051
2010	47.68900374287499
2011	47.78916719812168
2012	47.82058996352359
2013	47.88784062486864
2014	48.088380604835585
2015	48.12569922995466
2016	48.221758605175935
2017	48.17567574203217
2018	48.30249758514832
2019	48.44236938489398
2020	48.49618490197575
2021	48.82875356162687
2022	48.85391642168983
2023	49.02900731515102