Jan ( N = 242 )

Feb ( N = 223 )

Mar ( N = 226 )

Apr ( N = 118 )

May ( N = 100 )

Jun ( N = 166 )

Jul ( N = 196 )

Aug ( N = 215 )

Sep ( N = 52 )

May ( N = None )

Jun ( N = 58 )

Jul ( N = 181 )

Aug ( N = 216 )

Sep ( N = 234 )

Oct ( N = 234 )

Nov ( N = 223 )

Dec ( N = 243 )