Jan ( N = 247 )

Feb ( N = 219 )

Mar ( N = 237 )

Apr ( N = 122 )

May ( N = 103 )

Jun ( N = 177 )

Jul ( N = 203 )

Aug ( N = 216 )

Sep ( N = 51 )

May ( N = None )

Jun ( N = 6 )

Jul ( N = 128 )

Aug ( N = 219 )

Sep ( N = 228 )

Oct ( N = 235 )

Nov ( N = 229 )

Dec ( N = 247 )