Jan ( N = 241 )

Feb ( N = 222 )

Mar ( N = 227 )

Apr ( N = 117 )

May ( N = 95 )

Jun ( N = 164 )

Jul ( N = 197 )

Aug ( N = 215 )

Sep ( N = 55 )

May ( N = None )

Jun ( N = 58 )

Jul ( N = 183 )

Aug ( N = 211 )

Sep ( N = 231 )

Oct ( N = 234 )

Nov ( N = 224 )

Dec ( N = 244 )