(Olympia, WA)  --  State officials say Washington added more than eleven-thousand jobs between March and April.   Despite that, the unemployment rate remains unchanged at a seasonally-adjusted five-point-eight percent.  Employment Security Department labor economist Paul Turek says the state's economy continues steady growth, with more than 100-thousand jobs added since April 2015.  The department says job growth during March was greatest in the professional & business services sector, with about 33-hundred new jobs.