Year	% of total labor force
1991	23.93153667132822
1992	24.53969575448359
1993	23.441575398297527
1994	23.78594338449552
1995	22.80973334582551
1996	22.35024601101716
1997	21.891433992845975
1998	21.436692832179613
1999	21.58876849239606
2000	22.059677380765034
2001	22.598735063448107
2002	21.007406126652587
2003	21.362392422230624
2004	21.72807227044114
2005	22.106426997591296
2006	22.49916045591051
2007	24.17972944906248
2008	22.862823264302996
2009	23.75250002162617
2010	23.31573759277604
2011	22.904037699917442
2012	23.006111639341825
2013	23.553181519957818
2014	23.86637943407699
2015	24.075383741242053
2016	24.51928223859426
2017	24.470342847328798
2018	21.095697438048205
2019	18.648238488879638
2020	17.424072843125312
2021	18.008255241520605
2022	18.411393847513423
2023	18.598189519818632