Jan ( N = 619 )

Feb ( N = 548 )

Mar ( N = 582 )

Apr ( N = 536 )

May ( N = 597 )

Jun ( N = 600 )

Jul ( N = 575 )

Aug ( N = 617 )

Sep ( N = 600 )

Oct ( N = 621 )

Nov ( N = 590 )

Dec ( N = 618 )