Jan ( N = 278 )

Feb ( N = 260 )

Mar ( N = 279 )

Apr ( N = 268 )

May ( N = 278 )

Jun ( N = 270 )

Jul ( N = 279 )

Aug ( N = 279 )

Sep ( N = 262 )

Oct ( N = 277 )

Nov ( N = 270 )

Dec ( N = 276 )