Year	% of total labor force
1991	37.7349358812405
1992	37.784524269284574
1993	37.827582012527216
1994	38.02857500161864
1995	38.093210611802924
1996	38.11853630762788
1997	38.025871077236424
1998	39.2128706263336
1999	37.84790067620581
2000	36.41127518730515
2001	36.919253979854695
2002	37.418904948867045
2003	37.90903387736806
2004	39.371689026089726
2005	39.04814470398502
2006	39.07253827315337
2007	39.20283474131726
2008	39.39063316310886
2009	39.09925877932882
2010	38.6045670233639
2011	38.398378966084536
2012	38.80432942099119
2013	38.958748781182834
2014	38.37623706163929
2015	39.83278882153623
2016	41.24991731537939
2017	41.51778394582805
2018	41.1613661856033
2019	41.40001759789664
2020	40.51133537084911
2021	41.204742158728685
2022	41.58997222082599
2023	41.025979232132