Jan ( N = 87 )

Feb ( N = 89 )

Mar ( N = 231 )

Apr ( N = 175 )

May ( N = 231 )

Jun ( N = 201 )

Jul ( N = 225 )

Aug ( N = 205 )

Sep ( N = 228 )

Oct ( N = 232 )

Nov ( N = 236 )

Dec ( N = 248 )