Jan ( N = 527 )

Feb ( N = 492 )

Mar ( N = 522 )

Apr ( N = 510 )

May ( N = 527 )

Jun ( N = 510 )

Jul ( N = 524 )

Aug ( N = 525 )

Sep ( N = 507 )

Oct ( N = 525 )

Nov ( N = 508 )

Dec ( N = 524 )