Jan ( N = 247 )

Feb ( N = 222 )

Mar ( N = 232 )

Apr ( N = 122 )

May ( N = 99 )

Jun ( N = 177 )

Jul ( N = 201 )

Aug ( N = 215 )

Sep ( N = 55 )

May ( N = None )

Jun ( N = 12 )

Jul ( N = 132 )

Aug ( N = 218 )

Sep ( N = 231 )

Oct ( N = 199 )

Nov ( N = 118 )

Dec ( N = 246 )