Year	% of total labor force
1991	36.89154780377862
1992	36.291899671844504
1993	36.158751726573
1994	36.53681237899359
1995	36.895429700490894
1996	37.2648373625183
1997	37.47374276765363
1998	37.813251032563
1999	38.37437862479543
2000	38.63748406890423
2001	39.0955886892798
2002	39.31467150773047
2003	39.51555459817207
2004	40.27731036531838
2005	40.34228219735897
2006	40.5143948440316
2007	40.527816316636674
2008	41.023400285525895
2009	41.09217100998844
2010	41.2759170523959
2011	41.58561196644654
2012	42.1605737347749
2013	42.34797967624914
2014	42.56540079132374
2015	42.23316017783774
2016	42.426961250530994
2017	42.59246851339169
2018	42.603921913958345
2019	42.751110395743616
2020	42.439759524040454
2021	42.640099757450486
2022	42.766390610921604
2023	42.7821781927498