Year	% of total labor force
1991	35.689324980408344
1992	35.84418815141402
1993	36.02421759655657
1994	36.2130017139636
1995	36.402749084885556
1996	36.49076514174228
1997	36.57369810790797
1998	36.65690306109539
1999	36.9905563415605
2000	37.31245063834841
2001	37.61950029770178
2002	37.88789803467337
2003	38.13897071294596
2004	38.399595952163146
2005	38.65533865195992
2006	38.90871171828907
2007	39.16282814520062
2008	39.41997863560036
2009	39.682825992196676
2010	39.95113232101408
2011	40.2559258192832
2012	40.59515455196167
2013	40.93176793434834
2014	41.26358468958465
2015	41.59363054634538
2016	41.9194913031507
2017	42.24500027135791
2018	42.574998292153495
2019	42.90673021612294
2020	42.9270393292789
2021	43.50216968974075
2022	43.23680838904859
2023	43.314399164367224