Year	% of total labor force
1991	3.0437355340741283
1992	3.3983702883575115
1993	3.4160208791336766
1994	3.4263396355270146
1995	4.865916575741626
1996	5.392186602896823
1997	5.1857393839759816
1998	4.667256486461997
1999	4.259284369743835
2000	3.8890572310666567
2001	2.7226741248572073
2002	2.6581547488456727
2003	2.659641056677226
2004	2.0238919565517914
2005	2.474903526356771
2006	2.446412484548919
2007	2.3383824673315923
2008	2.4064947489044997
2009	2.30726404997788
2010	2.3097467167852983
2011	2.3707557051204367
2012	2.3113299918261845
2013	2.2854801820248976
2014	2.2719276224390423
2015	2.1751673468668664
2016	2.0820747197815885
2017	2.0035018222614176
2018	2.271931222979529
2019	2.2645747245380017
2020	2.3924199596579108