Year	% of total labor force (national estimate)
1994	5.72864482603706
1996	5.635935108172038
1999	6.20720674861792
2000	5.522840082369958
2003	6.4293745330569445
2005	5.789291889799299
2009	6.310217253991914
2010	5.469037055207897
2011	5.890129388233773
2012	5.42495622778072
2013	5.6269634448907055
2014	5.586264640460281
2017	5.558831521660163
2018	5.9575883174063105
2019	5.858237907675886
2020	6.670216506819422
2021	6.164515638015266