Jan ( N = 239 )

Feb ( N = 220 )

Mar ( N = 216 )

Apr ( N = 115 )

May ( N = 66 )

Jun ( N = 159 )

Jul ( N = 196 )

Aug ( N = 214 )

Sep ( N = 55 )

May ( N = None )

Jun ( N = 59 )

Jul ( N = 155 )

Aug ( N = 214 )

Sep ( N = 230 )

Oct ( N = 233 )

Nov ( N = 222 )

Dec ( N = 242 )