Year	% of total labor force
1991	1.8096980872198132
1992	1.7549618117567631
1993	1.5298872113934292
1994	1.4837185754856663
1995	1.7552439319916162
1996	1.7019845649530927
1997	1.5468416807539749
1998	1.4791510196137017
1999	1.3781310757982006
2000	1.2416510729480166
2001	1.2528987568460113
2002	1.2122537149116392
2003	1.2167598322969633
2004	1.2377452508904863
2005	1.2476630577781673
2006	1.2017456521470082
2007	1.165691168741104
2008	1.1395250646616695
2009	1.0967669428532703
2010	1.066941558515715
2011	1.020010919308509
2012	0.9790591988584287
2013	0.934326040764729
2014	0.9097991979193927
2015	0.8879994124315265
2016	0.8716547719934451
2017	0.8685387423201377
2018	0.847731364901104
2019	0.8274583284988878
2020	0.8179166076283233