Jan ( N = 558 )

Feb ( N = 506 )

Mar ( N = 480 )

Apr ( N = 540 )

May ( N = 558 )

Jun ( N = 540 )

Jul ( N = 558 )

Aug ( N = 558 )

Sep ( N = 480 )

Oct ( N = 558 )

Nov ( N = 466 )

Dec ( N = 558 )