Jan ( N = 242 )

Feb ( N = 222 )

Mar ( N = 211 )

Apr ( N = 113 )

May ( N = 65 )

Jun ( N = 154 )

Jul ( N = 195 )

Aug ( N = 215 )

Sep ( N = 52 )

May ( N = None )

Jun ( N = 59 )

Jul ( N = 156 )

Aug ( N = 213 )

Sep ( N = 233 )

Oct ( N = 234 )

Nov ( N = 221 )

Dec ( N = 243 )