Jan ( N = 244 )

Feb ( N = 224 )

Mar ( N = 223 )

Apr ( N = 115 )

May ( N = 93 )

Jun ( N = 161 )

Jul ( N = 195 )

Aug ( N = 215 )

Sep ( N = 52 )

May ( N = None )

Jun ( N = 61 )

Jul ( N = 170 )

Aug ( N = 215 )

Sep ( N = 232 )

Oct ( N = 233 )

Nov ( N = 223 )

Dec ( N = 244 )