Year	% of total labor force
1991	39.94618486145468
1992	40.42796161195493
1993	40.93651416365698
1994	41.269362564370425
1995	40.953546317938375
1996	41.27355497660975
1997	41.78371068417117
1998	41.99776354193144
1999	41.67878708549569
2000	41.55845478937024
2001	41.16908833193784
2002	40.24025580911383
2003	40.83475525748158
2004	41.426443961744944
2005	40.98261104229163
2006	41.30738264539074
2007	41.05324692293796
2008	40.79610053669105
2009	41.152237974844084
2010	40.59997807828026
2011	40.48755668824591
2012	40.75852341777051
2013	40.67292705493209
2014	40.82346402868578
2015	41.02502325076357
2016	41.233084850314185
2017	41.441270515726956
2018	42.14622010795598
2019	42.37605603053688
2020	42.39383413604172
2021	42.533910815810785
2022	42.51826705863747
2023	42.68612775095738