Year	% of total labor force
1991	4.7426925737611345
1992	5.298494470642556
1993	4.92728038055498
1994	4.725834109720366
1995	6.376082369932579
1996	6.275687410499395
1997	6.184355774755176
1998	6.0755807316572
1999	5.954556416625022
2000	5.857478618368759
2001	5.732659006331111
2002	5.390224167847605
2003	5.241215279791079
2004	4.9459680468482095
2005	4.853948898470161
2006	4.753635266714338
2007	4.5510839810558705
2008	4.354876071345842
2009	4.167764030068201
2010	3.695848932568057
2011	3.096166945321692
2012	2.6420658481509194
2013	2.3463572803223
2014	2.1962503931054562
2015	2.0797490849104023
2016	1.9557354647243577
2017	1.8897366792662513
2018	1.8700079615789609
2019	1.9256060537776705
2020	2.098254564708162