Year	% of total labor force
1991	32.012387946085354
1992	32.20599981026817
1993	32.346876765401426
1994	32.5074074512222
1995	32.73993361114023
1996	32.81995862133284
1997	33.0153776351135
1998	33.261080838653854
1999	33.430613512496826
2000	33.5671830493799
2001	33.64743182390837
2002	33.80978839632411
2003	33.9031809822128
2004	34.05581779290136
2005	34.21687737238555
2006	34.387904212390865
2007	34.57059443612749
2008	34.76526575992787
2009	34.972607183178056
2010	35.19122410762654
2011	33.406266346138075
2012	35.33214549304569
2013	33.708779909792156
2014	33.67224217603272
2015	32.444132723884216
2016	33.305036730607284
2017	32.43622397075924
2018	32.45742421009582
2019	32.064656566379725
2020	32.68322144202192
2021	33.238927074195395
2022	34.39368013163941
2023	34.481598881435524