Year	% of total labor force
1991	35.27839046168344
1992	35.727982935885755
1993	36.19237488111822
1994	36.64667435747369
1995	37.18756579125019
1996	37.34414742414561
1997	37.78777564065902
1998	38.07746347943342
1999	38.274924858452806
2000	38.47061199744492
2001	38.85409961734955
2002	39.15403189621388
2003	39.4240552867361
2004	39.83520524793689
2005	40.16580522989836
2006	40.31063973289865
2007	40.43084267704267
2008	40.46832753663429
2009	40.81730023017895
2010	40.72864438045113
2011	40.637192535741455
2012	40.820126415180965
2013	40.84316438800879
2014	40.799237122898845
2015	40.96942046231494
2016	41.159965292633814
2017	41.30599271191905
2018	41.53485343187005
2019	41.813535058776516
2020	41.192091576709394
2021	41.57751213820629
2022	41.79863805766979
2023	41.933856901746374