Jan ( N = 308 )

Feb ( N = 363 )

Mar ( N = 420 )

Apr ( N = 326 )

May ( N = 423 )

Jun ( N = 345 )

Jul ( N = 376 )

Aug ( N = 403 )

Sep ( N = 414 )

Oct ( N = 343 )

Nov ( N = 414 )

Dec ( N = 416 )