Cheyenne, WY – The seasonally adjusted jobless rate in Wyoming rose to 4.0% in May. That is a half percent higher than April and the highest unemployment rate the state has recorded since October 2004. State Senior Economist David Bullard of the Wyoming Department of Employment says one explanation might be that more people are entering the work force. Still, only six other states have lower unemployment rates. The national jobless rate is five-point-one percent.