Year	% of total labor force
1991	40.91831443915991
1992	41.704253479242745
1993	41.72549343658514
1994	42.008164458739124
1995	42.45965856882627
1996	43.012989152538886
1997	43.61620662908636
1998	43.84901555108741
1999	44.8171684550474
2000	45.79035141615119
2001	46.16531434663968
2002	46.58800669957842
2003	45.96119775148188
2004	46.37499639497851
2005	47.11720684723929
2006	47.2019631795413
2007	48.12702821810606
2008	48.23167411647019
2009	48.71137794699077
2010	48.4426858796433
2011	48.83890394801011
2012	48.665627522476136
2013	49.21524081349223
2014	49.2269919002949
2015	49.54441582458226
2016	49.91944824681479
2017	49.71374592087937
2018	49.77119220366195
2019	49.88068154499052
2020	49.93307690142215
2021	50.2236084500983
2022	50.28455193353226
2023	50.28923627849322