Jan ( N = 454 )

Feb ( N = 404 )

Mar ( N = 447 )

Apr ( N = 445 )

May ( N = 474 )

Jun ( N = 479 )

Jul ( N = 483 )

Aug ( N = 495 )

Sep ( N = 477 )

Oct ( N = 495 )

Nov ( N = 452 )

Dec ( N = 478 )