Year	% of total labor force
1991	0.6767960475110826
1992	0.6670808126712
1993	0.6371866933116903
1994	0.6127328959441678
1995	1.1821193502721794
1996	1.1883166467758108
1997	1.0544435208553864
1998	0.9957126166487029
1999	0.9660156933640368
2000	0.951009428579192
2001	1.2850280153710474
2002	1.491040516003643
2003	0.9493223792699265
2006	0.5145043933530148
2007	0.4969260156670834
2008	0.49073998191132423
2009	0.4746659175340622
2010	0.4755697859838908
2011	0.4559747110841869
2012	0.4220743143661176
2013	0.41931322483960204
2014	0.4091852912084035
2015	0.41173235548299353
2016	0.4267835414846667
2017	0.42822462779785914
2018	0.4065471987068547
2019	0.3886226823514781
2020	0.40707711709613975