Nevada's unemployment hit its lowest rate in nearly four years this past December.The seasonally adjusted rate fell from 10-8 percent to 10.2 percent. The raw rate was even lower at just 9.8 percent.That comes on the heels of a seven-tenths decrease from October to November.Nevada still has the highest jobless rate in the nation, a distinction it has held since May 2010. The national jobless rate in December was 7.8 percent.Department of Employment, Training and Rehabilitation economist Bill Anderson said all major indicators say Nevada ended 2012 on a strong note."Unemployment is down, job readings are up, initial claims for …