Jan ( N = 244 )

Feb ( N = 224 )

Mar ( N = 221 )

Apr ( N = 114 )

May ( N = 96 )

Jun ( N = 167 )

Jul ( N = 195 )

Aug ( N = 215 )

Sep ( N = 55 )

May ( N = None )

Jun ( N = 62 )

Jul ( N = 178 )

Aug ( N = 217 )

Sep ( N = 231 )

Oct ( N = 233 )

Nov ( N = 225 )

Dec ( N = 246 )