Jan ( N = 558 )

Feb ( N = 504 )

Mar ( N = 558 )

Apr ( N = 540 )

May ( N = 558 )

Jun ( N = 496 )

Jul ( N = 558 )

Aug ( N = 558 )

Sep ( N = 504 )

Oct ( N = 516 )

Nov ( N = 492 )

Dec ( N = 325 )