Jan ( N = 241 )

Feb ( N = 219 )

Mar ( N = 222 )

Apr ( N = 120 )

May ( N = 94 )

Jun ( N = 179 )

Jul ( N = 206 )

Aug ( N = 220 )

Sep ( N = 56 )

May ( N = None )

Jun ( N = 13 )

Jul ( N = 110 )

Aug ( N = 217 )

Sep ( N = 235 )

Oct ( N = 234 )

Nov ( N = 224 )

Dec ( N = 248 )