Jan ( N = 244 )

Feb ( N = 220 )

Mar ( N = 229 )

Apr ( N = 122 )

May ( N = 84 )

Jun ( N = 165 )

Jul ( N = 201 )

Aug ( N = 216 )

Sep ( N = 51 )

May ( N = None )

Jun ( N = 8 )

Jul ( N = 116 )

Aug ( N = 218 )

Sep ( N = 228 )

Oct ( N = 207 )

Nov ( N = 118 )

Dec ( N = 246 )