Jan ( N = 620 )

Feb ( N = 560 )

Mar ( N = 506 )

Apr ( N = 551 )

May ( N = 616 )

Jun ( N = 601 )

Jul ( N = 565 )

Aug ( N = 622 )

Sep ( N = 602 )

Oct ( N = 601 )

Nov ( N = 602 )

Dec ( N = 619 )