Year	% of total labor force
1991	38.40193500302344
1992	38.979717099573136
1993	39.547952220791984
1994	40.13156991196627
1995	40.73831813907853
1996	41.362425095026175
1997	41.978293574038254
1998	42.590542253051424
1999	43.20864968000954
2000	43.739114371668336
2001	43.768680434400395
2002	43.115834638890064
2003	42.65584488783677
2004	42.164625142391046
2005	44.3141951391335
2006	43.45859334550508
2007	41.23118453097033
2008	41.930484523155386
2009	42.59465176827945
2010	45.307482827297484
2011	44.24309713575743
2012	44.39504938774974
2013	44.51952541840182
2014	44.643183300717546
2015	44.724827326057834
2016	44.770211164324
2017	44.84036488027366
2018	44.82664906627324
2019	44.9459557302441
2020	44.93180692101077
2021	45.16264401434421
2022	45.13372071133646
2023	45.19772602603101