Jan ( N = 558 )

Feb ( N = 521 )

Mar ( N = 551 )

Apr ( N = 539 )

May ( N = 554 )

Jun ( N = 537 )

Jul ( N = 553 )

Aug ( N = 550 )

Sep ( N = 536 )

Oct ( N = 558 )

Nov ( N = 535 )

Dec ( N = 555 )