Jan ( N = 200 )

Feb ( N = 193 )

Mar ( N = 216 )

Apr ( N = 215 )

May ( N = 217 )

Jun ( N = 210 )

Jul ( N = 217 )

Aug ( N = 217 )

Sep ( N = 217 )

Oct ( N = 258 )

Nov ( N = 312 )

Dec ( N = 296 )