Jan ( N = 588 )

Feb ( N = 553 )

Mar ( N = 421 )

Apr ( N = 592 )

May ( N = 619 )

Jun ( N = 583 )

Jul ( N = 544 )

Aug ( N = 464 )

Sep ( N = 601 )

Oct ( N = 619 )

Nov ( N = 549 )

Dec ( N = 620 )