Pennsylvania’s unemployment rate fell for the ninth straight month and payrolls grew again in November, according to new state figures, but the labor force shrank, as did the workforce participation rate. Pennsylvania’s unemployment rate dropped three-tenths of a percentage point to 5.7% from October’s rate, according to state Department of Labor and Industry figures released Friday. The national rate was 4.2% in November. Pennsylvania lags most other states, tied at 40th among 50.In a survey of households, the labor force shrank for the sixth straight month, dropping by 10,000 to farther below 6.3 million, although the number of employed grew by 6,000.