Jan ( N = 557 )

Feb ( N = 502 )

Mar ( N = 557 )

Apr ( N = 538 )

May ( N = 557 )

Jun ( N = 538 )

Jul ( N = 547 )

Aug ( N = 556 )

Sep ( N = 537 )

Oct ( N = 554 )

Nov ( N = 539 )

Dec ( N = 558 )