Year	% of total labor force
1991	37.90357169889073
1992	38.1595003352739
1993	38.32900560155472
1994	38.33374224931435
1995	38.46840744283362
1996	38.47090237964345
1997	38.627178908070526
1998	38.606872685776125
1999	38.632707313506025
2000	38.73311983399035
2001	38.83257453446781
2002	38.8769732502448
2003	39.17307051967531
2004	39.469216705843245
2005	39.79275277991386
2006	40.05909719360541
2007	40.26745434914291
2008	40.59201830791864
2009	40.832458708501356
2010	41.13093014907188
2011	41.433070739650276
2012	41.683369374863254
2013	41.88386327606985
2014	42.230810678339076
2015	42.571470108985665
2016	42.88156104836534
2017	43.05833038727171
2018	43.201799042755326
2019	43.38949003599347
2020	43.39859259969086
2021	43.831464375922785
2022	43.40163026255281
2023	43.576624848898604