Jan ( N = 495 )

Feb ( N = 438 )

Mar ( N = 491 )

Apr ( N = 443 )

May ( N = 475 )

Jun ( N = 463 )

Jul ( N = 479 )

Aug ( N = 486 )

Sep ( N = 408 )

Oct ( N = 447 )

Nov ( N = 479 )

Dec ( N = 496 )