A new report says that of communities with at least 20,000 people, Muskegon has the highest unemployment rate nationwide. The Lake Michigan city beat out Detroit to top Tuesday's Census Bureau list. The report compares the jobless rate in 2000 with the average for 2005 through 2007 and says unemployment increased in 79 percent of the cities and towns. It says Muskegon's unemployment averaged 22.1 percent in the latest period, more than twice its rate in 2000. Detroit's rate was 21.6 percent, while Pontiac was ninth at 19 percent.