Jan ( N = 620 )

Feb ( N = 557 )

Mar ( N = 495 )

Apr ( N = 550 )

May ( N = 618 )

Jun ( N = 599 )

Jul ( N = 564 )

Aug ( N = 616 )

Sep ( N = 599 )

Oct ( N = 601 )

Nov ( N = 600 )

Dec ( N = 618 )