Year	% of total labor force
1991	26.703423915463276
1992	26.97346824418926
1993	26.735982014851633
1994	25.902693432337454
1995	25.18330876811989
1996	25.22633612982202
1997	25.394696467281026
1998	25.55751191198542
1999	25.706947944564966
2000	25.836231418911492
2001	25.93915282692575
2002	26.01753098581639
2003	26.07156776724156
2004	25.89131844416746
2005	26.002331297008457
2006	26.480782074016073
2007	27.032003405440967
2008	27.55368262283053
2009	28.05840638464096
2010	28.55389873629162
2011	28.72333249707705
2012	28.614835250525683
2013	28.53392290984792
2014	28.046898856881793
2015	26.1779923848679
2016	25.23142939623354
2017	25.255943473104004
2018	24.524322471907862
2019	24.312253500065424
2020	24.464671156779662
2021	24.620051546783646
2022	24.802097851560482
2023	24.981038766992025