Jan ( N = 443 )

Feb ( N = 435 )

Mar ( N = 485 )

Apr ( N = 465 )

May ( N = 477 )

Jun ( N = 479 )

Jul ( N = 484 )

Aug ( N = 493 )

Sep ( N = 479 )

Oct ( N = 496 )

Nov ( N = 471 )

Dec ( N = 496 )